Awesome Sysadmin

Client-server model backup tool.

A deduplicating backup program written in Python.

Provides an elegant DSL in Ruby for performing backups on UNIX-like systems.

Lightweight, extensible meta-backup system.

Client-server model backup tool with file pooling scheme.

Another Client-server model backup tool.

A fork of Bacula backup tool.

Backup and Recovery Manager for disaster recovery of PostgreSQL servers.

A fully automated backup checker.

Incremental backups with rolling checksums, git packfiles, de-duplication, and a FUSE filesystem.

Network backup and restore program.

AWS EBS backup script that supports strategies.

Multiple backends, encryption, web-ui and multi-OS backup tool.

Encrypted bandwidth-efficient backup using the rsync algorithm.

Folder comparison and synchronization tool.

File Monitor which spawns a process to synchronize the changes (rsync by default).

Fast, secure, efficient backup program

Filesystem Snapshotting Utility.

Centralized pull-based backup using rdiff-backup.

Snapshot backup with global multi-client deduplication and transparent compression.

Another client-server backup system.

A versatile deduplicating backup tool.

Etsy's Ops blog, lots of technical posts.

Devops consultants who blog about operations.

Slightly biased blog with lots of Devops Topics.

A book on Security techniques for DevOps that reviews state of the art practices used in securing web applications and their infrastructure.

A book about the Linux command line by William Shotts.

How DevOps techniques can fix the problems that happen in IT organizations.

The first and second editions describes the best practices of system and network administration, independent of specific platforms or technologies.

Is a methodology designed to jumpstart implementation of controls and process improvement.

Approaches system administration from a practical perspective.

Automation build tool, similar to make, written in Java.

Build automation tool mainly for Java.

The most popular automation build tool for many purposes.

Another open source build automation system.

The simple, fast, expandable, open-source Python IRC bot.

The world's most popular Open Source IRC bot, designed for flexibility and ease of use.

A plugin based chatbot designed to be easily deployable, extensible and maintainable.

A customizable, life embetterment robot.

Encrypted chat, cloud and git.

A chatops automation framework in Go.

A robot companion for your company's chat room.

Partition and disk imaging/cloning program.

Another computer cloning solution.

Easy Backup, Recovery and Restore.

Manage and supervise virtual machines using Libvirt.

Cloud computing software for creating, managing, and deploying infrastructure cloud services.

Cobbler is a Linux installation server that allows for rapid setup of network installation environments.

Open source private cloud software with AWS compatibility.

Develop and run resource-efficient distributed systems.

An user-driven cloud management platform for sysadmins and devops.

Open source upstream of OpenShift, the next generation application hosting platform developed by Red Hat.

Open source software for building private and public clouds.

Terraform allows you to practice infrastructure as code and is commonly used for AWS/GCE.

Foreman is a complete lifecycle management tool for physical and virtual servers. FOSS.

Tsuru is an extensible and open source Platform as a Service software.

Contains modules for controlling many types of cloud resources.

IaaS orchestration platform originally written for deploying and managing Cloud Foundry PaaS, but also useful for general purpose distributed systems.

Open source TOSCA-based cloud orchestration software platform written in Python and YAML.

It is a tool for discovering and configuring services in your infrastructure.

Doozer is a highly-available, completely consistent store for small amounts of extremely important data.

A highly-available key value store for shared configuration and service discovery.

Cloud orchestration tool which manages services as charms, YAML configuration and deployment script bundles.

Ruby framework to manage server orchestration, developed by Puppet labs.

Deploy VMs across different cloud providers, and run commands and scripts across any or all of them in parallel via SSH.

Simple orchestration tool.

Fast, scalable and flexible systems management software written in Python/ZeroMQ.

Serf is a tool for cluster membership.

Event Driven Operations and ChatOps platform for infrastructure management. Written in Python.

ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.

A synchronised folder on each of your OSX and Linux computers, Android devices, removable drives, NAS appliances, and cloud services.

Provides access to your files via the web

Provides universal access to your files via the web, your computer or your mobile devices.

Another Open Source Cloud Storage solution.

Provides cloud storage and file synchronization services. By default, it uses Git as a storage backend.

A highly available, distributed, eventually consistent object/blob store.

Open Source system for private, encrypted and authenticated distribution of data.

Based on the Git version control, it facilitates software developers to review modifications to the source code and approve or reject those changes.

Code review tool build by facebook and used by WikiMedia, FB, dropbox etc. Comes with an integrated wiki, bug tracker, VC integration and a CLI tool called arcanist.

Web-based collaborative code review tool.

Collaboration suite (messaging and groupware) that is descended from the Citadel family of programs.

Groupware software written in PHP.

PHP based collaborative software suite that includes email, calendars, wikis, time tracking and file management.

Another groupware suite.

Collaborative software server with a focus on simplicity and scalability.

Collaborative software suite, that includes an email server and web client.

It's written in Perl and use plain Perl, over SSH without agent.

It's written in Python and manages the nodes over SSH.

Lightweight agent system. Configuration state is specified via a declarative language.

It's written in Ruby and Erlang and uses a pure-Ruby DSL.

Next generation config management written in Go.

Infrastructure definition, configuration and management via a Clojure DSL.

It's written in Ruby and uses Puppet's declarative language or a Ruby DSL.

It's written in Perl.

Helps you keep track of your inventory, where it is, how it's connected, and provides an abstracted interface for interacting with the elements of the infrastructure.

At Tumblr, it's the infrastructure source of truth and knowledge.

Open Source IT Documentation and CMDB.

Complete open source, ITIL, web based service management tool.

Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks.

The systems & infrastructure encyclopaedia toolkit (based on MediaWiki).

Python-based toolkit for continuous integration.

A pipeline-based CI system written in Go.

Continuous integration server built on Docker and configured using YAML files.

Based off of ruby. They also provide GitLab, which manages git repositories.

Open source continuous delivery server.

An extendable open source continuous integration server.

Open source, multi-cloud continuous delivery platform for releasing software changes.

Powerful Continuous Integration out of the box

Control panel for Linux and BSD.

New multi-server web interface for Linux servers written in C.

VPS Provisioning and Management Software.

Easy to use panel for Linux with Nginx and PHP-FPM support.

Hosting control panel for Linux.

Control panel for Linux, BSD, and Windows based on ZPanel.

Hosting panel for Linux but with Nginx.

Control panel for Linux based on webmin.

Linux server control panel.

Control panel for Linux, BSD, and Windows.

The most widely used name server software.

DNS REST API that support several DNS servers as its backend.

A collection of DNS applications, including tinydns.

A lightweight service providing DNS, DHCP and TFTP services to small-scale networks.

High performance authoritative-only DNS server.

Authoritative only, high performance, simple name server.

DNS server with a variety of data storage back-ends and load balancing features.

Validating, recursive, and caching DNS resolver.

Lightweight authoritative Name Server with DNSSEC capabilities powering the .eu top-level domain.

Deploy your application to any number of machines simultaneously, in sequence or as a rolling set via SSH (rake based).

Python library and cli tool for streamlining the use of SSH for application deployment or systems administration tasks.

Really fast deployer and server automation tool (rake based).

PHP task runner and deployment tool.

Deployment automation (rake based).

Draws network diagrams dynamically from a text file describing the placement, layout and icons.

Distributed object store and file system.

Distributed Replicated Block Device.

Scale-out network-attached storage file system.

Distributed, scalable, and portable file-system written in Java for the Hadoop framework.

Unstructured object/data storage and a highly available, distributed, eventually consistent storage system.

A type of parallel distributed file system, generally used for large-scale cluster computing.

Application level, network distributed file system.

Fault tolerant, network distributed file system.

Distributed network file system with read-only replicas and multi-OS support.

secure, decentralized, fault-tolerant, peer-to-peer distributed data store and distributed file system.

XtreemFS is a fault-tolerant distributed file system for all storage needs.

A hackable text editor from GitHub.

Open source code editor for web designers and front-end developers.

IDE written in Java with an extensible plug-in system.

GTK2 text editor.

An extensible, customizable text editor-and more.

Markdown editor with live preview.

Code editor awesomeness, built with common web languages.

Capable and ergonomic IDE, written in Java, It has a lot of plug-ins.

Git-backed real-time collaborative code editing.

The next generation code editor.

Aims to provide an open source solution to Sublime Text

A popular text editor, by default comes with most Linux distributions.

A SCIntilla based Text Editor.

A graphical text editor for OS X.

A highly configurable text editor built to enable efficient editing.

Fast, hackable, multi-platform code editor from Microsoft.

Information Resource-Manager with an additional Administration Interface.

IP address management (IPAM) and data center infrastructure management (DCIM) tool.

Enables users to inventory their IT assets.

A web based Data Center Infrastructure Management application.

Datacenter and server room asset management like document hardware assets, network addresses, space in racks, networks configuration.

Asset & license management software.

Developed by Red Hat.

Apache Software Foundation project written in Java.

The Eclipse-based LDAP browser and directory client

Improve the Management of the services and the company directory based on OpenLDAP.

Fork of OpenDS.

Another directory server written in Java.

Developed by the OpenLDAP Project.

A web based real-time event log aggregation, analysis, monitoring and management system.

A Lucene Based Document store mainly used for log indexing, storage and analysis.

Log Collector and Shipper.

Distributed log collection and aggregation system.

Pluggable Log and Event Analysis Server with Alerting options.

Stream processing system which may be used for log aggregation.

Visualize logs and time-stamped data.

Tool for managing events and logs.

Log Management Solution (Visualize / Alert / Report).

Fast, scalable, enterprise IMAP and POP3 server.

Intended to be run on sealed servers, where normal users are not permitted to log in.

IMAP and POP3 server written primarily with security in mind.

Message transfer agent (MTA) developed at the University of Cambridge.

A high-performance, pluginable SMTP server written in JavaScript.

Full-featured mail server solution based on Postfix and Dovecot.

Take back control of your email with this easy-to-deploy mail server in a box.

Ruby gem that deploys a simply SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development.

Open Source disposable email SMTP server, also useful for development.

Secure SMTP server implementation from the OpenBSD project.

Fast, easy to administer, and secure Sendmail replacement.

Secure Sendmail replacement.

One of the oldest and most popular server implementations of POP3.

Message transfer agent (MTA).

Multi user XMPP client written in Javascript.

XMPP instant messaging server written in Erlang/OTP.

Web based chat client in the style of common paid alternatives.

A self hosted chat suite written in Node.

Fork of Prosody IM.

Fullstack real-time mobile messaging platform (XMPP+REST) in Erlang

Real time collaboration (RTC) server.

XMPP server written in Lua.

XMPP server implementation in Java.

System statistic collection daemon.

High precision system performance metrics collecting tool.

Python based statistic collection daemon.

Time series data visualization and graphing software written in Go.

A damn-sexy front-end real-time dashboard. Transforms raw JSON into delicious UI.

High performance, scalable RRD based monitoring for grids and/or clusters of servers. Compatible with Graphite using a single collection process.

A Graphite & InfluxDB Dashboard and Graph Editor.

Open source scalable graphing server.

Open source distributed time series database with no external dependencies.

Fast distributed scalable time series database, fork of OpenTSDB 1.x.

Distributed real-time performance and health monitoring.

Store and server massive amounts of time series data without losing granularity.

Captures network traffic and displays it in a custom Kibana dashboard for easy viewing.

Service monitoring system and time series database.

Open source industry standard, high performance data logging and graphing system for time series data.

Ruby gem that allows for rapid statistical dashboard development. An all HTML5 approach allows for big screen displays in data centers or conference rooms. Fork of Dashing.

Application statistic listener.

No Longer Maintained - Ruby gem that allows for rapid statistical dashboard development. An all HTML5 approach allows for big screen displays in data centers or conference rooms.

Web based Nagios configuration interface.

Distributed, scaleable and flexible monitoring system.

Monitoring and alerts, similar to PagerDuty.

Web-based network monitoring and graphing tool.

Opensource Hypervision and Data Aggregation Software

IT infrastructure and application monitoring for service performance.

Collection of extensions for Nagios.

A low-overhead monitoring web dashboard for a GNU/Linux machine.

Monitoring notification routing & event processing system.

Fork of Nagios.

fork of Observium.

Small Open Source utility for managing and monitoring Unix systems.

Networked resource monitoring tool.

Network monitoring tool based on the Nagios 4 core with performance enhancements and new features.

Computer system, network and infrastructure monitoring software application.

Real-time anomalies detection for periodic time series, metrics monitor.

SNMP monitoring for servers and networking devices. Runs on linux.

The Open Monitoring Distribution.

Based on Nagios 4, Opsview Core is ideal for small IT and test environments.

Flexible and fast events processor allowing complex events/metrics analysis.

Open source monitoring framework.

Application monitoring, event logging and aggregation.

A simple tool for creating graphs using rrdtool. (source on github)

An alerting dashboard for Graphite.

Another monitoring framework.

Multibackend monitoring web interface with support for Naemon, Nagios, Icinga and Shinken.

Simple dashboard for the Sensu monitoring framework.

Network monitoring inspired by Big Brother.

Enterprise-class software for monitoring of networks and applications.

Application, server, and network management platform based on Zope.

An automated web based IPv4/IPv6 IP Address Management tool.

Scalable, high-performance and open-source OSS system for ISP, service and content providers.

A modern take on network device configuration monitoring with web interface and GIT storage.

Open source IP address management with PowerDNS integration.

Monitors network device's configuration and maintain history of changes.

Another network device configuration management tool.

Robust network automation toolkit written in Python.

Mailing List Manager, written in Perl.

A community of DevOps, SysAdmin & Developers with a weekly newsletter and a team chat.

Newsletter manager written in PHP.

Newsletter for programmers who find themselves needing to know their way around a server.

Hadoop database, a distributed, big data store.

Distributed DBMS designed to handle large amounts of data across many servers.

In-memory, replicated, peristent key/value datastore.

Ease of use, with multi-master replication document-oriented database system.

Java based database, popular with log aggregation, and email archiving projects.

Twitter's distributed, fault-tolerant graph database.

C++ based BigTable-like DBMS, communicates through Thrift and runs either as stand-alone or on distributed FS such as Hadoop.

Google's high performance key/value database.

Another document-oriented database system.

Open source graph database.

Document based database with ACID/Transactional features.

Networked, in-memory, key-value data store with optional durability.

Open source distributed document store database, focuses on JSON.

Another fault-tolerant key-value NoSQL database.

Versatile multi format package creator.

Full stack, cross distro packaging software (Ruby).

Full stack, cross distro packaging software (Python).

Builds RPMs for git-based projects.

Fork of Redmine.

Clone of GitHub written in Scala; single jar install.

Clone of GitHub written in Ruby.

Self-hosted Git service written in Go.

Project collaboration with open source.

Agile, Free, Open Source Project Management Tool based on the Kanban and Scrum methods.

Written in PHP.

Written in python.

An open source message broker written in Java together with a full JMS client.

A simple, fast work queue.

Fast multi-language queuing/job processing platform.

A high-throughput distributed messaging system.

A realtime distributed messaging platform.

Robust, fully featured, cross distro queuing system.

High-performance asynchronous messaging library.

True universal open source database.

Galera Cluster for MySQL is an easy-to-use high-availability solution with high system up-time, no data loss, and scalability for future growth.

Community-developed fork of the MySQL.

Most popular RDBMS server.

Enhanced, drop-in MySQL replacement.

Object-relational database management system (ORDBMS).

Scalable Open Source PostgreSQL-based database cluster.

Library that implements a self-contained, serverless, zero-configuration, transactional SQL DBS.

Repository with LAMP updated packages for Debian.

Community Repo for Enterprise Linux (RHEL, CentOS, etc).

Repository for RHEL and compatibles (CentOS, Scientific Linux).

Repository with LAMP updated packages for RHEL/Centos/Fedora.

Community Release of Red Hat Software Collections. Provides updated packages of Ruby, Python, etc. for CentOS/Scientific Linux 6.x.

Enhances sshconfig file capabilities, completely transparent.

Automatically respawn ssh session after network interruption.

Controls a number of xterm windows via a single graphical console.

Dancer's shell / distributed shell - Wrapper for executing multiple remote shell commands from one command line.

The mobile shell.

Provides parallel versions of OpenSSH and related tools.

Pdsh is a high-performance, parallel remote shell utility.

Execute commands and upload files to many servers simultaneously without using pre-shared keys.

sources ~/.sshrc on your local computer after logging in remotely.

A command line tool to manage SSH connections.

Safely store secrets in Git/Mercurial. Provides tooling to automatically encrypt secrets like passwords.

BounCA is a personal SSL / Certificate Authority Key management tool. Create self-signed SSL certificates via your browser. (Source Code) Apache Python

Thwart SSH dictionary based attacks and brute force attacks.

Scans log files and takes action on IPs that show malicious behavior.

Protects ports via Single Packet Authorization in your firewall.

A low-interaction web application honeypot to emulate vulnerabilities and gather attack data.

A medium-interaction SSH honeypot, mostly used as a standalone SSH daemon with a configurable Filesystem sandbox.

Query your servers status and info using a SQL like interface.

OSSEC is a HIDS that performs log analysis, FIM, rootkit detection, and much more.

Firewall and Router FreeBSD distribution.

Snort is a free and open source network intrusion prevention system (NIPS) and network intrusion detection system (NIDS) created by Martin Roesch in 1998.

A powerful and popular email spam filter employing a variety of detection technique.

Consul is a tool for service discovery, monitoring and configuration.

Doozer is a highly-available, completely consistent store for small amounts of extremely important data.

ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.

Produces open source installers or software packages for web applications and development stacks as well as virtual appliances.

Open platform for developers and sysadmins to build, ship, and run distributed applications.

Fast, isolated development environments using Docker.

Userspace interface for the Linux kernel containment features.

LXD is a container "hypervisor".

Container-based virtualization for Linux.

Flexible containers without root.

Logfile Analyser.

Generates web, streaming, ftp or mail server statistics graphically.

Real-time web log analyzer and interactive viewer that runs in a terminal.

Add web analytics to websites using JS, PHP or REST APIs.

Web analytics application.

Fast, free web server log file analysis program.

An open source status page system written in PHP.

General-purpose bugtracker and testing tool originally developed and used by the Mozilla project.

Group-based e-mail management project.

Web-based bug tracking system written in PHP.

Web-based bug tracking system.

Simple support ticket system.

Trouble ticket system for assigning tickets to incoming queries and tracking further communications.

Open source project management/ticketing web application written in Ruby.

Ticket-tracking system written in Perl.

Ticket system with extensive user rights system.

A Python tool used for intercepting, viewing and modifying network traffic. Invaluable in troubleshooting certain problems.

Capture system state and activity from a running Linux instance, then save, filter and analyze.

Linux Live CD for general computer troubleshooting.

The world's foremost network protocol analyzer.

Uses a custom security protocol that utilizes SSL/TLS for key exchange.

OpenVPN based solution. Easy to set up.

Multi-protocol software VPN with advanced features

Poor man's VPN.

Complete IPsec implementation for Linux.

Distributed p2p VPN.

New minimal VPN Solution that is very fast.

Distributed version control with built-in wiki and bug tracking.

Distributed revision control and source code management (SCM) with an emphasis on speed.

Distributed revision control system sponsored by Canonical.

Another distributed revision control.

Client-server revision control system.

Cluster virtual server management software tool built on top of KVM and Xen.

Linux kernel virtualization infrastructure.

Manages virtual machines, storage and virtual networks.

A tool for creating identical machine images for multiple platforms from a single source configuration.

Complete open source virtualization management solution.

QEMU is a generic and open source machine emulator and virtualizer.

Tool for building complete development environments.

Virtualization product from Oracle Corporation.

Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures.

Most popular web server.

The HTTP/2 Web Server with Fully Managed TLS.

Lightweight, high-performance web server/reverse proxy.

Software based load Balancing, SSL offloading and performance optimization, compression, and general web routing.

Web server more optimized for speed-critical environments.

Reverse proxy, load balancer, HTTP cache, and web server.

Caching proxy for the web supporting HTTP, HTTPS, FTP, and more.

Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease.

The uWSGI project aims at developing a full stack for building hosting services.

HTTP based web application accelerator focusing on optimizing caching and compression.

A modern, fast web-mail client with user-friendly encryption and privacy features.

Browser-based IMAP client with an application-like user interface.

Another browser-based IMAP client.

A surprisingly vast resource for getting the basics of certain applications, tools, or even systems administration topics.

Comprehensive program that will help you learn to be an operations engineer.

A simple, user-friendly wiki built with PHP that uses MySQL for storage.

Simple to use and highly versatile wiki that doesn't require a database.

A simple, Git-powered wiki with a sweet API and local frontend.

A wiki compiler.

Wiki completely built in HTML5/Javascript and runs 100% on the client.

Used to power Wikipedia.

An advanced, easy to use and extensible WikiEngine with a large community of users.

Complete interactive wiki in JavaScript.

A a wiki that stores pages in a Git repository.