Best Websites for Programmers

Practice codeforces problems based on your proficiency and difficulty

An Advent calendar of small programming puzzles

Problems Archives

Is math class too easy for you? You've come to the right place!

One of the best places to build competitive programming skills for beginners to experts.

The only programming contests Web 2.0 platform

Notepad for notes and code snippets, stored locally in the browser

Programming Competition,Programming Contest,Online Computer Programming

Test your coding skills

Rank up by completing code kata

Verify and improve coding skills

Learn coding through games and challenges!

Facebook's Programming Contest, past problems solutions and FAQ

past contest problems for practice

Practice coding. Compete. Find jobs.

Practicing at lightoj is so good for beginners as it is categorized and have also chat room and forum which helps to communicate with others about any problem.

Judge online for ACMACPC

Topic and level wise proper arrange problems

Become a true programming master Learn how to code and build efficient algorithms

Deliver Faster through Crowdsourcing

Topic wise Practise Problem

Practice coding, Compete and be a better coder.

hundreds of problems supporting multiple languages.

leaderboards of coding metrics collected via editor plugins

Some good books and links in there.

Let's code a TCP/IP stack, 5: TCP Retransmission

The language of choice

Step By Step guide to pass Tensorflow Developer Certification

List of some algorithms and data structures and learning resources.

the online version of the Learning JavaScript Design Patterns published by O'Reilly, released by the author Addy Osmani under CC BY-NC-ND 3.0

What I Wish I Knew

Parallel processing with Unix tools

How I got to 200 productive hours a month

A guide to database normalization.

a comprehensive guide on webhooks

Kernel 101 – Let’s write a Kernel

A mentorship community to learn from fellow developers via live 1:1 help and more.

A friendly place for programming greenhorns. Jump straight into any of our topics and light hearted discussions. Ranging from Java, Databases, Android, Programmer certification, Programming jobs and much more...

Community where you can rant and release your stress

A search engine for anything you get stuck with.

Community curated knowledge graph of best paths for learning anything

A place to share knowledge and better understand the world

Stack Exchange is the combination of Stack Overflow and 170+ sites where you can get any kinds of help

subscribe to their weekly newsletter and any other topic which you find interesting

.

It is an awesome resource for finding internships, scholarships, tutors, etc.

You can search for internships here according to your skill sets for your interested location. It also helps you in getting a good PPO offer from the company.

Get a smart and challenging internship for you from the LetsIntern.

Get help finding a paid internship, resume prep, interview prep, and more!

Interactive online course to learn modern backend programming in Python, Javascript, Go, and more.

a directory of 100,000+ student reviews of thousands of MOOCs.

a website that gathers MOOCs and online courses from several providers, focusing on computer science and data science courses.

list of MOOCs for autodidacts

Take the world's best courses, online.

A set of goods tutorials from cs50

Free Online Courses, Advance Your Career, Improve Your Life.

Programming courses focused on art and creativity

Free online courses from the University of Helsinki

Free online courses by IIT with certificates

An online learning and workforce development platform that helps businesses and individuals adjust to changing technology.

List containing large amount of CS courses

whatever the heck those are) and other things that make you think!

Quant and aptitude preparation

questions to ask during on a interview to know more about the company.

For those who code!

A platform for coding challenges and interview prep.

really good stackoverflow question that covers basics of calculating runtime complexity.

Maximize your chances to get your resume in the hands on HR/HM.

Mock interview from professionals

also subscribe to their feeds to get links to their new articles.

list of important questions for interview

Google Interview Warmup is an AI-based tool that helps individuals practise for their interviews.

Free and Paid course options offering high quality technical interview practice.

Interviewing At Jane Street

study sheet for Interview

Data Structures and Algorithms in Javascript.

A new way to learn. Here you can prepare for your interview.

A large collection of coding interview problems

Prepare topic wise coding questions which are most frequently asked in MAANG companies.

Practice coding interviews with real peers

Coding practice for interviews

Logic Puzzles

An aggregate of links related to internships.

great SQL test

Java interview questions

Leading platform for technical interview preparation.

Algorithms for Coding Interview

website offering courses on system design, interview strategies, soft skills etc

logic puzzles and riddles

A podcast covering topics such as best programming practices, design patterns, coding for performance, object-oriented coding, database design and implementation, tips, tricks and a whole lot of other things.

A podcast that shares the humanity of developers and tells stories of some of the amazing people in software, hosted by Dave Rael.

A podcast for developers designed to fit inside your tea break.

A podcast featuring a panel of Software Engineers from Netflix, Evernote, Atlassian & LinkedIn talking over drinks about all things Front End development.

Everything from product design and user experience to unit testing and system administration.

A podcast dedicated to the Groovy programming language and its ecosystem.

A weekly group discussion about iOS development and related technology by development veterans. We discuss Apple, tools, practices, and code.

A weekly discussion about JavaScript, front-end development, community, careers, and frameworks.

A Season by season of tech podcast episodes by Laurence Bradford with topics ranging from Career in Tech to lessons in doing tech business

A podcast by Eric Normand, a functional programming expert talking about FP concepts.

Jason Young and Carl Schweitzer talk about the latest in developer news covering topics such as the Azure cloud, Windows, Windows Phone, Visual Studio, and cross-platform development using the Microsoft platform.

Podcast to learn about the latest happenings and trends in Python

A weekly discussion of the tools, techniques, and technologies used to build mobile applications with JavaScript and React.

A weekly podcast about just building websites from Dave Rupert and Chris Coyier.

A weekly advice podcast for software developers about non-technical topics.

A daily technical interview about software topics.

A podcast targeted at the professional software developer. The goal is to be a lasting educational resource, not a newscast.

A Tasty Treats Podcast for Web Developers by Wes Bos & Scott Tolinski.

Podcast to learn about Python through interviews and discussions

Guests discuss their development experience and challenges with Ruby, Rails, JavaScript, and others.

A weekly conversation that gets to the heart of open source technologies and the people who create them.

A podcast that aims to help you to improve your development knowledge and career, through explaining the latest and greatest in development technology and providing you with what you need to succeed as a developer. Covering Desktop, web, and mobile development, mainly around the .Net Stack but often looking into other software and frameworks.

A weekly Python podcast hosted by Christopher Bailey with interviews, coding tips, and conversation with guests from the Python community.

A mostly reasonable approach to JavaScript

A Ruby style guide by Airbnb

Officially endorsed style guide by John Pappa

An Aurelia style guide by Behzad Abbasi(Behzad888)

must see for those who create spaghetti

Check out how to debug your program

Another online CS courses

Free online CS courses

C programming habits to adopt

Google C# Style Guide

Google Java Style Guide

Google Python Style Guide

Want to report a bug but you don't know how? Check out this post

Style Guide for Python Code

Refactoring And Design Patterns

A community-driven Ruby coding style guide

Rust code formatting RFCs and coding style guides

Design Patterns & Refactoring

JavaScript style guide, with linter & automatic code fixer

Best Practices for Python Development

Uber Go Style Guide

Bad habits to avoid when you get started

Biography of Alan Turing

Cracking the Code Interview

Cracking the Coding Interview, Fullstack Speaker Series

Asymptotic Notation explained by Harvard

Code instructions

a very good video from the 1950s explaining how mechanical computers used to work without all the modern-day electronics.

Teach Yourself Computer Science

Story of Linux documentary

The Story of Aaron Swartz

An in-depth exploration of the art of shell scripting

Private Google Docs Alternative

Bash Guide for Beginners Machtelt Garrels

by Mike G mikkey at dynamo.com.ar

Bash Reference Manual

BashGuide - Greg's Wiki

An extensive collection of Shell oneliners that can save your day on many occasions

Unix and Linux Commands for Developers

A collection of pure bash alternatives to external processes.

screencast of people building applications, websites, games, etc.

The programming community of twitch.

Learn to code online with our beginner-friendly platform.

Learn to program, Upgrade your skills.

Best place to begin with problems that start at the easiest and gradually increase difficulty with each problem.

Learn to code interactively, for free.

Gamify your learning experience and have fun learning how to code!

It contains a Java tutorial with 1200 Java practise tasks.

Practice coding via various small challenges.

Download and solve practice problems in over 50 different languages, and share your solution with others.

Learn to code and build projects for nonprofits. Build your full stack web development portfolio today

Learn to code, Study for placement, Do competitive coding.

Great place to play around with code in an easy-to-set-up environment.

Gamifies the experience of practicing for your interview and includes lots of sample problems to solve.

Solutions to most of the problems in the link above

Learn and practice git commands in an interactive way

Learn Vim Script from beginning to expert.

The Linking Open Data cloud diagram

Cheat sheet to get yourself out of bad git situations

Guides and challenges to learn programming

It's your turn to be the interviewer. when done, click on the swap roles button on the left

very good site for those who want to start with absolute basics

Large collection of small programs.

interesting programming challenges where you can learn from looking at other's code, even if you are not able to solve code you can look at how others solved.

A curated interactive space for aspiring programmers to learn and master their coding skills. Also help in job interview.

Learn SQL interactively in stages, from basic queries to complex operations.

Boost Your SQL Proficiency with Challenging Problems.

The Odin Project provides a free open source coding curriculum that can be taken entirely online.

The fast, easy, and affordable way to build your skills.

Whether you want to learn or to share what you know, you’ve come to the right place. As a global destination for online learning, we connect people through knowledge.

Learn VIM by playing

A Collection of application ideas which can be used to improve your coding skills.

27 fun app ideas you can build while learning React.

a large collection of small projects for beginners with

A place to discuss ideas for applications, for bored developers.

A home for ideas by people who lack time, money, or skills.

Mega List of practical projects that one can solve in any programming language!

How to choose where to start

Great introduction to blockchain

A visual demo of Blockchain technology

Learn Blockchains by Building One

CryptoCurrency demo

Gitcoin is the easiest way to monetize or incentivize work in Open Source Software.

Complete 4 weeks seminar ciricullum for learning about Bitcoin.

Bitcoin, Cryptocurrencies and Blockchain explained in plain English

Learn to become a Web3 Developer for free.

Cryptocurrencies & Blockchain made effortless

Some Bitcoin Resources

Introduction to Bitcoin and tutorials to operate a full node

Bitcoin block explorer, mempool visualizer, transaction tracker, and fee estimator

Your development environment, in the cloud

Create pretty looking images of your code snippets.

Online pastebin-like playground for building websites using HTML, CSS, and JavaScript

Code editor to try, test and run 25+ languages

A Web-based development environment using Visual Studio Code as a code editor

CodeSandbox makes it easier to create, share, and reuse React projects with others.

Integrated cloud-based IDE directly to your browser.

Instantly share code, notes, and snippets.

Excellent tool for exploring the assembly output of different compilers with and without optimization.

online compiler and debugging tool for more than 60 programming languages

Front end playground, Output is not framed, so it allows you to share those snippets that will break inside an iframe.

Test your JavaScript, CSS, HTML or CoffeeScript with online code editor

Online compiler with 40+ interpreters and compilers.

Pastebin can store texts like code, notes, and snippets online for a set time which can be shared instantly.

Online PHP compiler with SQL support.

Online Javascript playground with a built-in console and support for npm packages.

Online JavaScript playground with instant live feedback

Instant Dev environments with support of nodejs and npm packages.

Online compiler with bleeding edge C++ and 40 other languages.

CareerBuilder is one of the largest job boards, providing job listings, resume posting, and career advice and resources to job seekers.

Transparent job board for UK based developers

Devsnap is a job aggregator for developer jobs.

Dice is the leading site for tech job seekers.

Dedicated job board for tech roles in Germany - with salary brackets

Find the job that's right for you.

Find more and amazing international internships and jobs.

Find international jobs on Indeed and get a market salary for your dedication and devotion.

Your dream job is here. Showcase yourself to a curated list of top companies. Complete privacy and no spam.

Tens of thousands of remote jobs from over 10,000 companies and startups worldwide.

A very nice research tool for programming jobs

Get your dream job 10x faster. Never apply for a job ever again, talk directly to decision-makers and hiring managers.

4 day week job board.

Paysa helps you in finding new and interesting jobs according to your wish.

Remote Machine Learning jobs.

Simply Hired is a free job search engine (and mobile app) that takes the hassle out of getting hired and provides you with all the information you need to make a sound career move.

Tech job board for Software Engineers that want to work in Switzerland.

Find everything you need to succeed from dream jobs to career advice. You can do a lot here on The Muse like exploring companies, browsing jobs, career advice, discover careers, career coaching. Try it.

Become Recruiter,

The largest remote work community in the world.

Wellfound (formerly known as Angellist) is a

An awesome resource for searching,

The Smartest Way to Get Hired.

Exhaustive list of books from Zed A. Shaw.

Python Data Science Handbook

A book about JavaScript, programming, and the wonders of the digital.

GitBook helps your team write, collaborate, and publish content online.

More than 500 free ebooks on almost any language you can think of

Programming Notes for Professionals books

An Ordered and Curated Reading List for Software Craftsmanship Growth.

The complete guide to GraphQL, the new REST ✨

Weekly news coverage of opensource technologies, programming, etc. ( Originally Linux Weekly News).

MIT's tech review magazine.

NewYorker for tech.

Lucas Vieira Barbosa's lab original math and physics visualization

Programming Puzzles, Math Tricks, Algorithms, etc

Tutorials, tips & tricks, and rants about programming and design.

Personal website and blog of software developer Andy Heathershaw

The world is under the RULE.

HR-related stuff

blog on Python and open source

the blog of might dot net

the blog of Brendon D. Gregg

a blog of the author of the book "Clean Code"

Blog on software and human factors. 100% Tested on Humans.

the CoderGears Team

A blog about IT, programming and Java

one the best coding blog

quant, math, computer science puzzles

about building websites and all that entails, mostly from a front-end perspective

Stories about software

Daniel Lemire's blog

everything from Python to LLVM

My precious collectibles

The HackerEarth blog

IT Enthusiast

The blog of the CEO of StackOverflow

Random thoughts of an old C++ guy

A Friendly Linux Forum

Math ∩ Programming

PREPARE FOR A TECHNICAL INTERVIEW

Paul Grahan Essays

programming blog of Yegor Bugayenko

programming in the twenty-first century

Sudhakar Rayavaram Blog's

Technical interview questions from Apple, Google, Facebook, Amazon, and Microsoft

Project Nayuki

I know how to make and sell software online, and I can share my tips with you.

mainly focuses on Java and JVM languages

Web development tutorials

Software. People. Problems. Ideas. Engineering.

Android Open Source Developers Forum

A collection of advice about how to do research and how to communicate effectively (primarily for computer scientists).

Brief Intro to LaTeX for beginners that helps you use LaTeX with the ease

Arbitrary reference

The Not So Short Introduction to LATEX2ε

articles and views

Everyone must read this tiny book before writing the seminar report

A one-place well-known API Documentation with a searchable interface

Step-by-step guides for Spring, rest, Java, security, persistence, Jackson, HTTP client-side and Kotlin

Collection of hand-curated color palettes best fitted for branding.

Fundamental concepts of Computer Science Engineering using hands-on exercises

curl cheat.sh — the only cheat sheet you need — instant answers on programming questions with curl

Create the perfect palette or get inspired by thousands of beautiful color schemes.

Step by step guides and paths to learn different tools or technologies

Developer news aggregator

A collection of useful .gitignore templates for your project. Select from 442 Operating System, IDE, and Programming Language

Discover a wide collection of tools made by the community - for you. ✨

Over 2.2 Million+ Design Assets, Curated SVGs, Vector Icons, Illustrations, 3D graphics, and Lottie Animations. Over 3000+ assets added every day. Integrated plugins, tools, editors, and more.

Single repository for everything you need to build better products as a developer. API, DB, Queue, Server, Webhooks, Bin, Tools, Podcasts etc. Everything you need to build super apps that our world needs.

All-in-one Machine Learning and Data Science Community – access free GPUs and a huge repository of community published data & code.

Community library of micro code pieces for popular issues.

The world’s largest online platform for the world’s smallest animation format for designers, developers, and more. Access Lottie animation tools and plugins for Android, iOS, and Web.

A place with all the documentation of the web standards

a multisubreddit of all subreddits of topics related to computer science and programming.

A set of good cheatsheets

The perfect Tailwind CSS Page Builder

Weekly FREE UI resources straight to your inbox

Response on Quora by ashish2199

TechNews

Crowdsourced software recommendations

Posts unique quality articles on technology, science, politics and society.

Weekly links to help you become a better developer

Featured articles for modern developers available every day

Your guide to a better future! An excellent source of up-to-date tech news.

A Great Chrome extension which provides recent and relevant tech articles and news

An online community of thousands of developers and IT experts interested in DevOps

once-weekly roundup of the frontend news, articles and tutorials

news related to the latest mobile phones and android.

Hacking is an art form that uses something in a way in which it was not originally intended.

news aggregator for programmers where civility is king, try a newsletter to get top news to your inbox:

curated automatically, delivered as frequently as you want

curated by hand, delivered weekly

How hackers start their afternoons.

Hashnode is a friendly and inclusive community for software developers

Success stories of various companies on their apps, infra scaling.

Lobsters is a technology-focused community centered around link aggregation and discussion.

Discover your next favorite thing

Tech news that focuses on the business of Silicon Valley

Subreddit with aggregated tech news and articles

A journalism related to Defi, Web3, Blockchain and security on them.

News, Social news (Originally "News for Nerds. Stuff that Matters")

See what tools are popular with developers and companies and read about their technology decisions

Stratechery by Ben Thompson

dedicated to obsessively profiling startups, reviewing new Internet products, and breaking tech news

Where programmers share ideas and help each other grow.

More product oriented tech news

curated news related to Computer Hardware, Software, and everything else in the Tech World.

Android Developers News

Learn advanced c++

C++Now (previously BoostCon) conference

code::dive conference organized by NOKIA Wrocław Technology Center

Tutorials, how to's, tips and tricks

for those who like to know how we reached where we are.

Must watch for every CS student

C++ Conference

freecodecamp youtube channel

geeksforgeeks youtube

videos on trending topics and cool stuff happening in the tech industry.

tech talks from the GOTO Conference by Developers for Developers

Awesome reverse engineering and hacking(CTF) videocasts. Every Wednesday is new live streams.

Hacker earth youtube

Put together by a band of IT ninjas, security professionals, and hardcore gamers, Hak5 isn't your typical tech show. We take on hacking in the old-school sense.

contains good interviews of developers and people related to the tech industry.

talks related to java

Java Conference

Game and graphics tutorials

Khan Academy youtube

Microsoft .NET technologies and SQL Server tutorials.

100% FREE Web Development tutorials, web site design tutorials, and more. Including, but not limited to: HTML, CSS, JavaScript, CSS Layouts, Responsive Design, React.js, Node.js, Angular.js, Docker, Dev

Talks on C++

MIT OpenCourseWare for learning in-depth algorithms, data structures, and computer engineering

OpenCV, Self Driving, Robotics and AI tutorials.

great videos to watch for web developers, mobile developers and those interested in some of Netflix's tech stack

interviews and talks of the world's best technical writers.

Interview and campus placement experience

competitive programming

Python Programming tutorials, going further than just the basics. Learn about machine learning, finance, data analysis, robotics, web development, game development, and more.

Artificial Intelligence and deep learning tutorials videos

The videos on this channel are largely about web design & development with a good dose of mobile development thrown in just for fun.

Tutorials on Data structures and Algorithms in Java and C++.

In this YouTube channel I publish "creative coding" video tutorials every week. Subjects covered range from the basics of programming languages like JavaScript (with p5.js) and Java (with Processing) to generative algorithms like physics simulation, computer vision, and data visualization.

Web development tutorials

Videos on technology, storytelling, and being happie.

blogs and tutorials developer making a 3d game in Java using OpenGL

talks on various topics

Web development and programming

Tutorials Point originated from the idea that there exists a class of readers who respond better to online content and prefer to learn new skills at their own pace from the comforts of their drawing rooms. We bring simple to understand Text and Video tutorials at zero cost and cover many subjects including IT, Engineering, MBA, MCA, Management, Various Exams Preparation, and Academic subjects. If you are not extravagant and willing to save your money and time then we recommend you to try our tut

Udacity, a pioneer in online education, is building "University by Silicon Valley", a new type of online university

Videos for people who want to understand the software better, including explanations of how the software performs some of its most important jobs and tools programmers can use to solve programming problems.

Tutorials based on Web development from basic to advanced.

You have found the world-famous XDA-Developers.com YouTube Channel, known as XDA TV. We cover Android and Windows Mobile from HTC, Samsung, Motorola, Sony, and more. Learn about rooting your Android, how to build applications, and more.

This is an ultra-simplified example of all the major pieces of a modern compiler written in easy to read JavaScript.

How to Speak to Computers, Pre-Siri

Curated list of awesome resources on Compilers, Interpreters, and Runtimes.

A handbook for writing interpreters, first implementing a tree walking interpreter and later a bytecode virtual machine

Learn how to grow a compiler

Try to demystify compilers by building one

Resources for Amateur Compiler Writers

Structure and Interpretation of Computer Programs

How to write your compiler

The first post in a series by Nora Sandler on writing your own C compiler

Write out your first compiler

An awesome repository for finding beginner-friendly projects in different programming languages.

Like GitHub, BitBucket hosts both public and private projects. On this site, open-source projects and private projects with fewer than five users are free. It hosts more than 48,000 repositories, many of which are searchable on the site.

CodeCuriosity is a platform that encourages contributions to open source. Everyone is rewarded for their efforts, no matter how big or small they are.

Help out your favorite open-source projects and become a better developer while doing it.

A Supportive community for people who are interested or already contributing in Open source.

Contributing to open source for the first time can be scary and a little overwhelming. Perhaps you’re a Code Newbie or maybe you’ve been coding for a while but haven’t found a project you felt comfortable contributing to.

Google offers free hosting for open source projects using the Subversion or Mercurial version control systems. It offers 2 GB of storage, integrated code review tools, a wiki, and an issue tracker. The Google Code site also provides links to Google's many publicly available APIs and other developer tools.

Google Open Source

Google Summer of Code is a global program focused on bringing more student developers into open source software development. Students work with an open-source organization on a 3-month programming project during their break from school.

Contribute to Open Source. Search issue labels to find the right project for you

Maintained by Canonical, LaunchPad is particularly targeted at projects that run on Ubuntu. It provides hosting for more than 21,000 projects that use the Bazaar version control system.

MediaWiki is a free software open source wiki package written in PHP, originally for use on Wikipedia. It is now also used by several other projects of the non-profit Wikimedia Foundation and by many other wikis, including this website, the home of MediaWiki.

A fully remote, 12-week internship alternative where participants earn a stipend and learn to collaborate on real open source projects with peers and engineers from top companies.

The Winter of Security (MWOS) is a program organized by Mozilla's Security teams to involve students with Security projects. Students who have to perform a semester project as part of their university curriculum can apply to one of the MWOS projects.

Everything open-source and hacker culture - news, zines, and projects

OpenHatch is a non-profit dedicated to matching prospective free software contributors with communities, tools, and education.

Open Source

Open Source Web Design is a platform for sharing standards-compliant free web design templates. We give web publishers a voice through good design.

The world's leading provider of open source solutions

SourceForge hosts nearly 280,000 projects (at last count). It serves more than 2 million downloads a day and includes apps and tools in a wide variety of categories.

This is a list of projects which have curated tasks specifically for new contributors. These are a great way to get started with a project or to help share the load of working on open source projects.

Your First PR helps you get started contributing to Open Source by showcasing great starter issues on GitHub and elsewhere.

Algorithm tutorials playlists by an Indian youtuber Aditya verma.

A PluralSight Company and an Interactive learning destination for aspiring and experienced Developers

front end web dev tutorials

C++ tutorials

a very good introductory CS course

good quality tutorials

web dev tutorials

Free courses about programming

John Carmack on Functional Programming (2013)

Has good videos for beginners

learn about computer science for free

An amazing guide to Git and GitHub for beginners

A free serie of videos to learn Next.js

Data structures and algorithms tutorials

good but with too much talk as compared to actual content

Algorithm and Data structure tutorial by an Indian Youtuber.

A serie of tutorials about Vim

good video tutorial for learning vim

Immersion-based learning of English, can be used by people on different levels.

for those who want to improve their English language skills

Ways to become a better dev!

Kevin London's blog

Design Patterns explained in detail with examples.

Game Programming Patterns is a collection of patterns Robert Nystrom found in games that make code cleaner, easier to understand, and faster

How to become a programmer or the art of Googling well

How to escape tutorial purgatory

A set of best practices for JavaScript projects.

A comprehensive site resource by Laurence Bradford for developers who aims to build a career in the tech world

The Codist Header Lessons From A Lifetime Of Being A Programmer

The currently most common and impactful software weaknesses.

A site by Martin Fowler about Software Architecture patterns and best practices to help building software effectively.

The entire collection of Design Patterns.

If you’re a self-taught engineer or bootcamp grad, you owe it to yourself to learn computer science. Thankfully, you can give yourself a world-class CS education without investing years and a small fortune in a degree program

OWASP is an open community dedicated to enabling organizations to conceive, develop, acquire, operate, and maintain applications that can be trusted.

What I’ve learned from teaching others

The Principles of Good Programming

Henrik Warne's blog

Share code in real-time with other developers

Front End Developer Playground & Code Editor in the Browser

Quickly Conduct Coding Interviews and Phone Screen Interviews.

A tool for developers and API testers to check if an API is CORS-enabled for a given domain and identify gaps

Quick and simple editor for cron schedule expressions

Perfect website for visually learning Algorithms

Cheatsheet for devs icons

Drawing tools to make design and uml easily. Old draw.io

Emaildrop is a free disposable email provider.

Online developer tools: REST and SOAP clients, SQLite browser, testers (Regex, XPath, JSONPath) and other tools (Encoders, Converters and formatters)

A huge list of free resources and tools

Useful tool for visualizing Graphs

A comprehensive hotkey cheatsheet for popular software and applications

Write in one language and get the same result in other languages.

Online image sharing and image hosting service.

Collection of handy online tools for developers.

An online open-source tool designed for visualizing data in various languages such as JSON, YAML, CSV, and more.

Collection of JSON tools, including a formatter, validator, comparator, testers, generators, and a mock API for testing and prototyping.

Jumpstart Application Development by finding the right Open Source resource

Easy to use typing practice app.

100+ dev tools including code converters, formatters, and minifiers.

Appollo launchepad for testing GraphQl queries

Easily ask questions about your Linux, Windows, and macOS infrastructure

Free cloud-based IDE to run code and databases in almost any language

API for open sourced image models

Code review as a service from vetted, professional reviewers

Online regex tester and visualizer for Python.

Watch the execution of basic Python, Java, C++, etc. code step-by-step. Recommended for new programmers and the Canadian Computing Competition.

Beautiful code snippet screenshots.

Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript

Another online tool to learn, build & test Regular Expressions

Accessible prototyping tool for various needs.

Collection of open source Figma UI design templates for your next project.

Live Programming for the Classroom

Online debugging tools for developers and system administrators

Online tool for searching millions of open source repositories.

Online and open source SVG Path editor.

Animate svg graphically. Its like a video editor but for svg.

Webhook tester & debugger. Test webhooks directly from your test suite.

Increase your typing speed while racing against others.

Increase typing speed while racing.

Useful tool for test and debug webhooks.

Natural Language for Developers

The leading textbook in Artificial Intelligence (4th most cited publication of the century). Includes Github repositories and more AI resources!

Colorizing B&W Photos with Neural Networks

Coding the History of Deep Learning

Deep Learning course by Andrew Ng, Founder of Coursera

A free course for AI basics by Reaktor and University of Helsinki

Free practical deep learning course for coders without grad-level maths!

A jumpstart AI course from Google

A comprehensive blog that contains guidance, tutorials, and e-book for mastering ML

A one-stop playlist for all the basics of Machine Learning simplified, from Logistic Regression to Reinforcement Learning.

Open Machine Learning course by OpenDataScience

Machine Learning University (MLU) is an education initiative from Amazon designed for visual explanations of core machine learning concepts.

Robots that Learn

A Python module for machine learning build on top of SciPy

Game Agent Framework. Helping you create AIs / Bots to play any game you own! BETA

An open-source software library for Machine Intelligence

A Strongly-typed Database

Unsupervised Sentiment Neuron

Difference artificial intelligence, machine-learning, deep-learning-ai

a free beginner introduction to python

for those wanting to learn git with a solid foundation

Designing a Tree Diff Algorithm Using Dynamic Programming and A

contains articles on various topics

A guide of C++17

lightweight introduction to DS

cheat sheets for lots of programming languages

Learn cryptography through challenges and tutorials. Has a leaderboard and new challenges are added every few months.

very good presentation on C language

aka the "Gang Of Four" book, or GOF

very good resource if want to learn how to solve DP problems.

Match command-line arguments to their help text

a game that teaches you how to use CSS flexbox properties

Good resource for revising C++ topics and STL

Writing a Unix Shell

A programming community & a great place to find the best online programming courses and tutorials.

The Modern JavaScript Tutorial

Free Interactive Python Tutorial

This website is intended for everyone who wishes to learn programming with Unix/Linux shell interpreters.

good site for learning Linux

good resource for learning Linux

The missing semester of your computer science education

Excellent resource for learning about DS and algos, provides code in various languages C++, Java, and pseudocode.

Interactive Vim tutorials

Chapter-wise course notes according to Galvin's book

resources recommended by developers

Prompting Guide AI is an online resource that helps users learn and craft effective prompts for AI models to generate better and more relevant outputs.

The JavaScript SVG library for the modern web

Tips for public speaking

a very good SQL cheat sheet

Full, free CS course created by Stanford

Learn how continuous integration platforms work under the hood, by building one of your own on top of git with Node.js

The Bash Academy is an initiative to promote the bash shell language and educate people on its use.

a very good guide for learning the Bash Shell

for those moving to C from some higher programming language like java or python.

Text and Video Tutorials for UPSC, IAS, PCS, Civil Services, Banking, Aptitude, Questions, Answers, Explanation, Interview, Entrance, Exams, Solutions

Unix shell scripting with ksh/bash

Vim Cheat Sheet

Learn VIM from the browser.

Get basics of Java

The C++ FAQ

The C++ FAQ

The C++11 FAQ

A set of videos on how the GC works

Garbage Collection is Good!

Java Corner

A-Z python programming concepts and methods.

Java memory management

Keyboard shortcuts to enhance your productivity when working in IntelliJ.

Java Corner at Artima.com

Java Student's Resource

Java Off the Heap house

good for learning about Java Language and interview preparation.

helps visualize references, values of variables, etc

Java source

Best website to get a basic Java programming tutorial

Welcome to Javaworld

Java, Java EE, Android, Web Development Tutorials

a free online textbook for learning Java

Keyboard shortcuts to enhance your productivity when working in Netbeans.

Documentation for different Qt versions, languages, tools and platforms

A collection of runnable examples that illustrate various Rust concepts and standard libraries

Quickly get an overview of the capabilities of the Rust crate ecosystem

view source of java library and learn how things are implemented.

The C++ Programming Language.

The Java Memory Model

The best tutorials for Java.

Explains the Rust programming language

Understanding JVM Internals

Demystify the garbage collection

Daily short documentaries about the incredible variety of people that make up the world

Expert driven, actionable, educational content, featuring experts ranging from Bill Clinton to Bill Nye

Past, present, and future of technology

small courses on various subjects

High-quality analysis of films and filmmaking

The secret of longevity

Expose to the Right for Astrophotography in Light Pollution – Palos Verdes, Los Angeles, California

High volume of high-quality content from all over the world

How to live a happy life

Subreddit dedicated to exactly what it sounds like

Where free time goes to die

A simple crossword game where clues are regex that must be matched.

A youtube channel about science, mainly, but not only, the universe and space.

Answers to interesting questions that you've always wondered about

Lots of amazing scientific information about the world around us, usually captured with a high-speed camera

Great talks about technology, entertainment, and design

Interesting information about news from around the world

The best youtube channel

A website that provides up-to-date browser support tables for support of front-end web technologies on desktop and mobile web browsers.

Place to showcase your project and collaborate with others. (Must know Git to use it effectively)

An alternative to GitHub that offers free unlimited (private) repositories and unlimited collaborators.