Awesome Sysadmin

    A curated list of amazingly awesome open source sysadmin resources.


    Please read CONTRIBUTING if you wish to add software.

    Table of Contents


    Backup software.

    • Amanda - Client-server model backup tool.
    • Attic - A deduplicating backup program written in Python.
    • Bacula - Another Client-server model backup tool.
    • Bareos - A fork of Bacula backup tool.
    • Barman - Backup and Recovery Manager for disaster recovery of PostgreSQL servers.
    • Backupninja - Lightweight, extensible meta-backup system.
    • Backuppc - Client-server model backup tool with file pooling scheme.
    • Brebis - A fully automated backup checker.
    • Bup - Incremental backups with rolling checksums, git packfiles, de-duplication, and a FUSE filesystem.
    • Burp - Network backup and restore program.
    • Duplicati - Multiple backends, encryption, web-ui and multi-OS backup tool.
    • Duplicity - Encrypted bandwidth-efficient backup using the rsync algorithm.
    • FreeFileSync - Folder comparison and synchronization tool.
    • Lsyncd - File Monitor which spawns a process to synchronize the changes (rsync by default).
    • restic - Fast, secure, efficient backup program
    • Rsnapshot - Filesystem Snapshotting Utility.
    • SafeKeep - Centralized pull-based backup using rdiff-backup.
    • Snebu – Snapshot backup with global multi-client deduplication and transparent compression.
    • UrBackup - Another client-server backup system.
    • ZBackup - A versatile deduplicating backup tool.

    Backup libraries.

    • Backup - Provides an elegant DSL in Ruby for performing backups on UNIX-like systems.
    • DREBS - AWS EBS backup script that supports strategies.

    Build Automation

    Build automation tools.

    • Apache Ant - Automation build tool, similar to make, written in Java.
    • Apache Maven - Build automation tool mainly for Java.
    • GNU Make - The most popular automation build tool for many purposes.
    • Gradle - Another open source build automation system.


    Conversation-driven development & management.

    • CloudBot - The simple, fast, expandable, open-source Python IRC bot.
    • Eggdrop - The world's most popular Open Source IRC bot, designed for flexibility and ease of use.
    • Err - A plugin based chatbot designed to be easily deployable, extensible and maintainable.
    • Hubot - A customizable, life embetterment robot.
    • Lazlo - A chatops automation framework in Go.
    • Lita - A robot companion for your company's chat room.
    • KeyBase - Encrypted chat, cloud and git.


    Cloning software.

    • Clonezilla - Partition and disk imaging/cloning program.
    • Fog - Another computer cloning solution.
    • Redo Backup - Easy Backup, Recovery and Restore.

    Cloud Computing

    • AppScale - Open source cloud software with Google App Engine compatibility.
    • Archipel - Manage and supervise virtual machines using Libvirt.
    • CloudStack - Cloud computing software for creating, managing, and deploying infrastructure cloud services.
    • Cobbler - Cobbler is a Linux installation server that allows for rapid setup of network installation environments.
    • Eucalyptus - Open source private cloud software with AWS compatibility.
    • Mesos - Develop and run resource-efficient distributed systems.
    • OpenNebula - An user-driven cloud management platform for sysadmins and devops.
    • Openshift Origin - Open source upstream of OpenShift, the next generation application hosting platform developed by Red Hat.
    • OpenStack - Open source software for building private and public clouds.
    • The Foreman - Foreman is a complete lifecycle management tool for physical and virtual servers. FOSS.
    • Tsuru - Tsuru is an extensible and open source Platform as a Service software.
    • Terraform - Terraform allows you to practice infrastructure as code and is commonly used for AWS/GCE.

    Cloud Orchestration

    • BOSH - IaaS orchestration platform originally written for deploying and managing Cloud Foundry PaaS, but also useful for general purpose distributed systems.
    • Ansible - Contains modules for controlling many types of cloud resources.
    • Cloudify - Open source TOSCA-based cloud orchestration software platform written in Python and YAML.
    • consul - It is a tool for discovering and configuring services in your infrastructure.
    • doozerd - Doozer is a highly-available, completely consistent store for small amounts of extremely important data.
    • etcd - A highly-available key value store for shared configuration and service discovery.
    • Juju - Cloud orchestration tool which manages services as charms, YAML configuration and deployment script bundles.
    • MCollective - Ruby framework to manage server orchestration, developed by Puppet labs.
    • Overcast - Deploy VMs across different cloud providers, and run commands and scripts across any or all of them in parallel via SSH.
    • Rundeck - Simple orchestration tool.
    • Salt - Fast, scalable and flexible systems management software written in Python/ZeroMQ.
    • serf - Serf is a tool for cluster membership.
    • StackStorm - Event Driven Operations and ChatOps platform for infrastructure management. Written in Python.
    • zookeeper - ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.

    Cloud Storage

    • git-annex assistant - A synchronised folder on each of your OSX and Linux computers, Android devices, removable drives, NAS appliances, and cloud services.
    • nextCloud - Provides access to your files via the web
    • ownCloud - Provides universal access to your files via the web, your computer or your mobile devices.
    • Seafile - Another Open Source Cloud Storage solution.
    • SparkleShare - Provides cloud storage and file synchronization services. By default, it uses Git as a storage backend.
    • Swift - A highly available, distributed, eventually consistent object/blob store.
    • Syncthing - Open Source system for private, encrypted and authenticated distribution of data.

    Code Review

    Web Based collaborative code review system.

    • Gerrit - Based on the Git version control, it facilitates software developers to review modifications to the source code and approve or reject those changes.
    • Phabricator - 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.
    • Review Board - Web-based collaborative code review tool.

    Collaborative Software

    Collaborative software or groupware suites.

    • Citadel/UX - Collaboration suite (messaging and groupware) that is descended from the Citadel family of programs.
    • EGroupware - Groupware software written in PHP.
    • Horde Groupware - PHP based collaborative software suite that includes email, calendars, wikis, time tracking and file management.
    • Kolab - Another groupware suite.
    • SOGo - Collaborative software server with a focus on simplicity and scalability.
    • Zimbra - Collaborative software suite, that includes an email server and web client.

    Configuration Management Database

    Configuration management database (CMDB) software.

    • Clusto - 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.
    • Collins - At Tumblr, it's the infrastructure source of truth and knowledge.
    • i-doit - Open Source IT Documentation and CMDB.
    • iTop - Complete open source, ITIL, web based service management tool.
    • Ralph - Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks.
    • Sicekit - The systems & infrastructure encyclopaedia toolkit (based on MediaWiki).

    Configuration Management

    Configuration management tools.

    • Ansible - It's written in Python and manages the nodes over SSH.
    • CFEngine - Lightweight agent system. Configuration state is specified via a declarative language.
    • Chef - It's written in Ruby and Erlang and uses a pure-Ruby DSL.
    • mgmt - Next generation config management written in Go.
    • Pallet - Infrastructure definition, configuration and management via a Clojure DSL.
    • Puppet - It's written in Ruby and uses Puppet's declarative language or a Ruby DSL.
    • (R)?ex - It's written in Perl and use plain Perl, over SSH without agent.
    • Salt - It's written in Python.
    • Slaughter - It's written in Perl.

    Continuous Integration & Continuous Deployment

    Continuous integration/deployment software.

    • Buildbot - Python-based toolkit for continuous integration.
    • Drone - Continuous integration server built on Docker and configured using YAML files.
    • GitLab CI - Based off of ruby. They also provide GitLab, which manages git repositories.
    • Go - Open source continuous delivery server.
    • Jenkins - An extendable open source continuous integration server.
    • Concourse CI - A pipeline-based CI system written in Go.
    • Spinnaker - Open source, multi-cloud continuous delivery platform for releasing software changes.
    • TeamCity - Powerful Continuous Integration out of the box

    Control Panels

    Web hosting and server control panels.

    • Ajenti - Control panel for Linux and BSD.
    • Cockpit - New multi-server web interface for Linux servers written in C.
    • Feathur - VPS Provisioning and Management Software.
    • Froxlor - Easy to use panel for Linux with Nginx and PHP-FPM support.
    • ISPConfig - Hosting control panel for Linux.
    • Sentora - Control panel for Linux, BSD, and Windows based on ZPanel.
    • VestaCP - Hosting panel for Linux but with Nginx.
    • Virtualmin - Control panel for Linux based on webmin.
    • Webmin - Linux server control panel.
    • ZPanel - Control panel for Linux, BSD, and Windows.

    Deployment Automation

    Tools and scripts to support deployments to your servers.

    • Capistrano - Deploy your application to any number of machines simultaneously, in sequence or as a rolling set via SSH (rake based).
    • Fabric - Python library and cli tool for streamlining the use of SSH for application deployment or systems administration tasks.
    • Mina - Really fast deployer and server automation tool (rake based).
    • Rocketeer - PHP task runner and deployment tool.
    • Vlad the Deployer - Deployment automation (rake based).


    Tools to diagram networks.

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

    Distributed Filesystems

    Network distributed filesystems.

    • Ceph - Distributed object store and file system.
    • DRBD - Distributed Replicated Block Device.
    • LeoFS - Unstructured object/data storage and a highly available, distributed, eventually consistent storage system.
    • GlusterFS - Scale-out network-attached storage file system.
    • HDFS - Distributed, scalable, and portable file-system written in Java for the Hadoop framework.
    • Lustre - A type of parallel distributed file system, generally used for large-scale cluster computing.
    • MooseFS - Fault tolerant, network distributed file system.
    • MogileFS - Application level, network distributed file system.
    • OpenAFS - Distributed network file system with read-only replicas and multi-OS support.
    • TahoeLAFS - secure, decentralized, fault-tolerant, peer-to-peer distributed data store and distributed file system.
    • XtreemFS - XtreemFS is a fault-tolerant distributed file system for all storage needs.


    DNS servers.

    • Bind - The most widely used name server software.
    • djbdns - A collection of DNS applications, including tinydns.
    • Designate - DNS REST API that support several DNS servers as its backend.
    • dnsmasq - A lightweight service providing DNS, DHCP and TFTP services to small-scale networks.
    • Knot - High performance authoritative-only DNS server.
    • NSD - Authoritative only, high performance, simple name server.
    • PowerDNS - DNS server with a variety of data storage back-ends and load balancing features.
    • Unbound - Validating, recursive, and caching DNS resolver.
    • Yadifa - Lightweight authoritative Name Server with DNSSEC capabilities powering the .eu top-level domain.


    Open source code editors.

    • Atom - A hackable text editor from GitHub.
    • Brackets - Open source code editor for web designers and front-end developers.
    • Eclipse - IDE written in Java with an extensible plug-in system.
    • Geany - GTK2 text editor.
    • GNU Emacs - An extensible, customizable text editor-and more.
    • Haroopad - Markdown editor with live preview.
    • ICEcoder - Code editor awesomeness, built with common web languages.
    • IntellijIDEA - Capable and ergonomic IDE, written in Java, It has a lot of plug-ins.
    • jotgit - Git-backed real-time collaborative code editing.
    • Light Table - The next generation code editor.
    • Lime - Aims to provide an open source solution to Sublime Text
    • SciTE - A SCIntilla based Text Editor.
    • TextMate - A graphical text editor for OS X.
    • Vim - A highly configurable text editor built to enable efficient editing.
    • Nano - A popular text editor, by default comes with most Linux distributions.
    • Visual Studio Code - Fast, hackable, multi-platform code editor from Microsoft.

    IT Asset Management

    IT Assets Management software.

    • GLPI - Information Resource-Manager with an additional Administration Interface.
    • OCS Inventory NG - Enables users to inventory their IT assets.
    • Netbox - IP address management (IPAM) and data center infrastructure management (DCIM) tool.
    • RackTables - Datacenter and server room asset management like document hardware assets, network addresses, space in racks, networks configuration.
    • Ralph - Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks.
    • Snipe IT - Asset & license management software.
    • OpenDCIM - A web based Data Center Infrastructure Management application.


    LDAP servers.

    LDAP management

    Log Management

    Log management tools: collect, parse, visualize ...

    • Echofish - A web based real-time event log aggregation, analysis, monitoring and management system.
    • Elasticsearch - A Lucene Based Document store mainly used for log indexing, storage and analysis.
    • Fluentd - Log Collector and Shipper.
    • Flume - Distributed log collection and aggregation system.
    • Graylog2 - Pluggable Log and Event Analysis Server with Alerting options.
    • Heka - Stream processing system which may be used for log aggregation.
    • Kibana - Visualize logs and time-stamped data.
    • Logstash - Tool for managing events and logs.
    • Octopussy - Log Management Solution (Visualize / Alert / Report).

    Mail Servers

    Mail Delivery Agents (IMAP/POP3 software).

    • Courier IMAP/POP3 - Fast, scalable, enterprise IMAP and POP3 server.
    • Cyrus IMAP/POP3 - Intended to be run on sealed servers, where normal users are not permitted to log in.
    • Dovecot - IMAP and POP3 server written primarily with security in mind.
    • Qpopper - One of the oldest and most popular server implementations of POP3.

    Mail Transfer Agents (SMTP servers).

    • Exim - Message transfer agent (MTA) developed at the University of Cambridge.
    • Haraka - A high-performance, pluginable SMTP server written in JavaScript.
    • MailCatcher - Ruby gem that deploys a simply SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development.
    • Maildrop - Open Source disposable email SMTP server, also useful for development.
    • OpenSMTPD - Secure SMTP server implementation from the OpenBSD project.
    • Postfix - Fast, easy to administer, and secure Sendmail replacement.
    • Qmail - Secure Sendmail replacement.
    • Sendmail - Message transfer agent (MTA).

    Complete solutions.

    • Mail-in-a-Box - Take back control of your email with this easy-to-deploy mail server in a box.
    • iRedMail - Full-featured mail server solution based on Postfix and Dovecot.


    XMPP servers.

    • ejabberd - XMPP instant messaging server written in Erlang/OTP.
    • Metronome IM - Fork of Prosody IM.
    • MongooseIM - Fullstack real-time mobile messaging platform (XMPP+REST) in Erlang
    • Openfire - Real time collaboration (RTC) server.
    • Prosody IM - XMPP server written in Lua.
    • Tigase - XMPP server implementation in Java.

    XMPP web clients.

    • Candy - Multi user XMPP client written in Javascript.
    • Kaiwa - Web based chat client in the style of common paid alternatives.


    • Lets-Chat - A self hosted chat suite written in Node.


    Monitoring software.

    • Alerta - Distributed, scaleable and flexible monitoring system.
    • Canopsis - Opensource Hypervision and Data Aggregation Software
    • Cacti - Web-based network monitoring and graphing tool.
    • Cabot - Monitoring and alerts, similar to PagerDuty.
    • Centreon - IT infrastructure and application monitoring for service performance.
    • check_mk - Collection of extensions for Nagios.
    • Flapjack - Monitoring notification routing & event processing system.
    • Icinga - Fork of Nagios.
    • LibreNMS - fork of Observium.
    • Monit - Small Open Source utility for managing and monitoring Unix systems.
    • Munin - Networked resource monitoring tool.
    • Naemon - Network monitoring tool based on the Nagios 4 core with performance enhancements and new features.
    • Nagios - Computer system, network and infrastructure monitoring software application.
    • Node-Bell - Real-time anomalies detection for periodic time series, metrics monitor.
    • Observium - SNMP monitoring for servers and networking devices. Runs on linux.
    • Opsview - Based on Nagios 4, Opsview Core is ideal for small IT and test environments.
    • Riemann - Flexible and fast events processor allowing complex events/metrics analysis.
    • Sensu - Open source monitoring framework.
    • Sentry - Application monitoring, event logging and aggregation.
    • Serverstats - A simple tool for creating graphs using rrdtool. (source on github)
    • Seyren - An alerting dashboard for Graphite.
    • Shinken - Another monitoring framework.
    • Xymon - Network monitoring inspired by Big Brother.
    • Zabbix - Enterprise-class software for monitoring of networks and applications.
    • Zenoss - Application, server, and network management platform based on Zope.

    Monitoring dashboards.

    • Adagios - Web based Nagios configuration interface.
    • Dash - A low-overhead monitoring web dashboard for a GNU/Linux machine.
    • Thruk - Multibackend monitoring web interface with support for Naemon, Nagios, Icinga and Shinken.
    • Uchiwa - Simple dashboard for the Sensu monitoring framework.

    Monitoring distributions.

    • OMD - The Open Monitoring Distribution.

    Metric & Metric Collection

    Metric gathering and display software.

    • Collectd - System statistic collection daemon.
    • Collectl - High precision system performance metrics collecting tool.
    • dashing - 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.
    • Smashing - 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.
    • Diamond - Python based statistic collection daemon.
    • Facette - Time series data visualization and graphing software written in Go.
    • Freeboard - A damn-sexy front-end real-time dashboard. Transforms raw JSON into delicious UI.
    • Ganglia - High performance, scalable RRD based monitoring for grids and/or clusters of servers. Compatible with Graphite using a single collection process.
    • Grafana - A Graphite & InfluxDB Dashboard and Graph Editor.
    • Graphite - Open source scalable graphing server.
    • InfluxDB - Open source distributed time series database with no external dependencies.
    • KairosDB - Fast distributed scalable time series database, fork of OpenTSDB 1.x.
    • NetData - Distributed real-time performance and health monitoring.
    • OpenTSDB - Store and server massive amounts of time series data without losing granularity.
    • Packetbeat - Captures network traffic and displays it in a custom Kibana dashboard for easy viewing.
    • Prometheus - Service monitoring system and time series database.
    • RRDtool - Open source industry standard, high performance data logging and graphing system for time series data.
    • Statsd - Application statistic listener.

    Network Configuration Management

    Network configuration management tools.

    • GestióIP - An automated web based IPv4/IPv6 IP Address Management tool.
    • NOC Project - Scalable, high-performance and open-source OSS system for ISP, service and content providers.
    • Netbox - IP address management (IPAM) and data center infrastructure management (DCIM) tool.
    • Oxidized - A modern take on network device configuration monitoring with web interface and GIT storage.
    • phpIPAM - Open source IP address management with PowerDNS integration.
    • RANCID - Monitors network device's configuration and maintain history of changes.
    • rConfig - Another network device configuration management tool.
    • trigger - Robust network automation toolkit written in Python.


    Newsletter software.

    • DadaMail - Mailing List Manager, written in Perl.
    • phpList - Newsletter manager written in PHP.



    • Apache HBase - Hadoop database, a distributed, big data store.
    • Cassandra - Distributed DBMS designed to handle large amounts of data across many servers.
    • Hypertable - C++ based BigTable-like DBMS, communicates through Thrift and runs either as stand-alone or on distributed FS such as Hadoop.

    Document Store.

    • CouchDB - Ease of use, with multi-master replication document-oriented database system.
    • ElasticSearch - Java based database, popular with log aggregation, and email archiving projects.
    • MongoDB - Another document-oriented database system.
    • RavenDB - Document based database with ACID/Transactional features.
    • RethinkDB - Open source distributed document store database, focuses on JSON.


    • FlockDB - Twitter's distributed, fault-tolerant graph database.
    • Neo4j - Open source graph database.


    • Couchbase - In-memory, replicated, peristent key/value datastore.
    • LevelDB - Google's high performance key/value database.
    • Redis - Networked, in-memory, key-value data store with optional durability.
    • Riak - Another fault-tolerant key-value NoSQL database.


    • fpm - Versatile multi format package creator.
    • omnibus-ruby - Full stack, cross distro packaging software (Ruby).
    • packman - Full stack, cross distro packaging software (Python).
    • tito - Builds RPMs for git-based projects.


    Queuing software.

    • ActiveMQ - An open source message broker written in Java together with a full JMS client.
    • BeanstalkD - A simple, fast work queue.
    • Gearman - Fast multi-language queuing/job processing platform.
    • Kafka - A high-throughput distributed messaging system.
    • NSQ - A realtime distributed messaging platform.
    • RabbitMQ - Robust, fully featured, cross distro queuing system.

    Queuing libraries.

    • ZeroMQ - High-performance asynchronous messaging library.


    Relational DBMS.

    • Firebird - True universal open source database.
    • Galera - 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.
    • MariaDB - Community-developed fork of the MySQL.
    • MySQL - Most popular RDBMS server.
    • Percona Server - Enhanced, drop-in MySQL replacement.
    • PostgreSQL - Object-relational database management system (ORDBMS).
    • PostgreSQL-XL - Scalable Open Source PostgreSQL-based database cluster.
    • SQLite - Library that implements a self-contained, serverless, zero-configuration, transactional SQL DBS.


    Security tools.

    • Blackbox - Safely store secrets in Git/Mercurial. Provides tooling to automatically encrypt secrets like passwords.
    • Denyhosts - Thwart SSH dictionary based attacks and brute force attacks.
    • Fail2Ban - Scans log files and takes action on IPs that show malicious behavior.
    • fwknop - Protects ports via Single Packet Authorization in your firewall.
    • Glastopf - A low-interaction web application honeypot to emulate vulnerabilities and gather attack data.
    • Kippo - A medium-interaction SSH honeypot, mostly used as a standalone SSH daemon with a configurable Filesystem sandbox.
    • OSSEC - OSSEC is a HIDS that performs log analysis, FIM, rootkit detection, and much more.
    • OSQuery - Query your servers status and info using a SQL like interface.
    • pfSense - Firewall and Router FreeBSD distribution.
    • Snort - Snort is a free and open source network intrusion prevention system (NIPS) and network intrusion detection system (NIDS) created by Martin Roesch in 1998.
    • SpamAssassin - A powerful and popular email spam filter employing a variety of detection technique.
    • BounCA - BounCA is a personal SSL / Certificate Authority Key management tool. Create self-signed SSL certificates via your browser. (Source Code) Apache Python

    Service Discovery

    • Consul - Consul is a tool for service discovery, monitoring and configuration.
    • Doozerd - Doozer is a highly-available, completely consistent store for small amounts of extremely important data.
    • ZooKeeper - ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.

    Software Containers

    Operating system–level virtualization.

    • Bitnami - Produces open source installers or software packages for web applications and development stacks as well as virtual appliances.
    • Docker - Open platform for developers and sysadmins to build, ship, and run distributed applications.
    • LXC - Userspace interface for the Linux kernel containment features.
    • LXD - LXD is a container "hypervisor".
    • OpenVZ - Container-based virtualization for Linux.
    • Docker Compose - Fast, isolated development environments using Docker.
    • Singularity - Flexible containers without root.


    SSH tools.

    • Advanced SSH config - Enhances ssh_config file capabilities, completely transparent.
    • autossh - Automatically respawn ssh session after network interruption.
    • Cluster SSH - Controls a number of xterm windows via a single graphical console.
    • DSH - Dancer's shell / distributed shell - Wrapper for executing multiple remote shell commands from one command line.
    • Mosh - The mobile shell.
    • parallel-ssh - Provides parallel versions of OpenSSH and related tools.
    • pdsh - Pdsh is a high-performance, parallel remote shell utility.
    • SSH Power Tool - Execute commands and upload files to many servers simultaneously without using pre-shared keys.
    • sshrc - sources ~/.sshrc on your local computer after logging in remotely.
    • stormssh - A command line tool to manage SSH connections.


    Analytics software.

    • Analog - Logfile Analyser.
    • AWStats - Generates web, streaming, ftp or mail server statistics graphically.
    • GoAccess - Real-time web log analyzer and interactive viewer that runs in a terminal.
    • Open Web Analytics - Add web analytics to websites using JS, PHP or REST APIs.
    • Piwik - Web analytics application.
    • Webalizer - Fast, free web server log file analysis program.

    Status Pages

    • Cachet - An open source status page system written in PHP.

    Ticketing systems

    Web-based ticketing system.

    • Bugzilla - General-purpose bugtracker and testing tool originally developed and used by the Mozilla project.
    • Cerb - Group-based e-mail management project.
    • Flyspray - Web-based bug tracking system written in PHP.
    • MantisBT - Web-based bug tracking system.
    • osTicket - Simple support ticket system.
    • OTRS - Trouble ticket system for assigning tickets to incoming queries and tracking further communications.
    • Redmine - Open source project management/ticketing web application written in Ruby.
    • Request Tracker - Ticket-tracking system written in Perl.
    • TheBugGenie - Ticket system with extensive user rights system.


    Troubleshooting tools.

    • mitmproxy - A Python tool used for intercepting, viewing and modifying network traffic. Invaluable in troubleshooting certain problems.
    • Sysdig - Capture system state and activity from a running Linux instance, then save, filter and analyze.
    • Wireshark - The world's foremost network protocol analyzer.

    Troubleshooting distributions.

    Project Management

    Web-based project management and bug tracking systems.

    • ChiliProject - Fork of Redmine.
    • GitBucket Clone of GitHub written in Scala; single jar install.
    • GitLab - Clone of GitHub written in Ruby.
    • Gogs - Self-hosted Git service written in Go.
    • OpenProject - Project collaboration with open source.
    • Phabricator Written in PHP.
    • Redmine - Written in ruby on rails.
    • Taiga - Agile, Free, Open Source Project Management Tool based on the Kanban and Scrum methods.
    • The Bug Genie - Written in PHP.
    • Trac - Written in python.

    Version control

    Software versioning and revision control.

    • Fossil - Distributed version control with built-in wiki and bug tracking.
    • Git - Distributed revision control and source code management (SCM) with an emphasis on speed.
    • GNU Bazaar - Distributed revision control system sponsored by Canonical.
    • Mercurial - Another distributed revision control.
    • Subversion - Client-server revision control system.


    Virtualization software.

    • Archipel - XMPP based virtualization management platform.
    • Ganeti - Cluster virtual server management software tool built on top of KVM and Xen.
    • KVM - Linux kernel virtualization infrastructure.
    • OpenNebula - Flexible enterprise cloud made simple.
    • oVirt - Manages virtual machines, storage and virtual networks.
    • Packer - A tool for creating identical machine images for multiple platforms from a single source configuration.
    • Proxmox VE - Complete open source virtualization management solution.
    • QEMU - QEMU is a generic and open source machine emulator and virtualizer.
    • Vagrant - Tool for building complete development environments.
    • VirtualBox - Virtualization product from Oracle Corporation.
    • Xen - Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures.


    VPN software.

    • OpenVPN - Uses a custom security protocol that utilizes SSL/TLS for key exchange.
    • Pritunl - OpenVPN based solution. Easy to set up.
    • SoftEther - Multi-protocol software VPN with advanced features
    • sshuttle - Poor man's VPN.
    • strongSwan - Complete IPsec implementation for Linux.
    • tinc - Distributed p2p VPN.
    • wireguard - New minimal VPN Solution that is very fast.


    Web servers.

    • Apache - Most popular web server.
    • Caddy - The HTTP/2 Web Server with Fully Managed TLS.
    • Cherokee - Lightweight, high-performance web server/reverse proxy.
    • Lighttpd - Web server more optimized for speed-critical environments.
    • Nginx - Reverse proxy, load balancer, HTTP cache, and web server.
    • uWSGI - The uWSGI project aims at developing a full stack for building hosting services.

    Web Performance.

    • HAProxy - Software based load Balancing, SSL offloading and performance optimization, compression, and general web routing.
    • Squid - Caching proxy for the web supporting HTTP, HTTPS, FTP, and more.
    • Traefik - Træfɪk is a modern HTTP reverse proxy and load balancer made to deploy microservices with ease.
    • Varnish - HTTP based web application accelerator focusing on optimizing caching and compression.


    Webmail applications.

    • Mailpile - A modern, fast web-mail client with user-friendly encryption and privacy features.
    • Roundcube - Browser-based IMAP client with an application-like user interface.
    • SquirrelMail - Another browser-based IMAP client.


    Wiki software.

    • BookStack - A simple, user-friendly wiki built with PHP that uses MySQL for storage.
    • DokuWiki - Simple to use and highly versatile wiki that doesn't require a database.
    • Gollum - A simple, Git-powered wiki with a sweet API and local frontend.
    • ikiwiki - A wiki compiler.
    • MDwiki - Wiki completely built in HTML5/Javascript and runs 100% on the client.
    • MediaWiki - Used to power Wikipedia.
    • MoinMoin - An advanced, easy to use and extensible WikiEngine with a large community of users.
    • Ōlelo Wiki - A a wiki that stores pages in a Git repository.
    • TiddlyWiki - Complete interactive wiki in JavaScript.


    Various resources, such as books, websites and articles, for improving your skills and knowledge.



    Sysadmin related books.


    • Servers for Hackers - Newsletter for programmers who find themselves needing to know their way around a server.
    • DevOpsLinks - A community of DevOps, SysAdmin & Developers with a weekly newsletter and a team chat.


    Debian-based distributions.

    • Dotdeb - Repository with LAMP updated packages for Debian.

    RPM-based distributions.

    • ElRepo - Community Repo for Enterprise Linux (RHEL, CentOS, etc).
    • EPEL - Repository for RHEL and compatibles (CentOS, Scientific Linux).
    • Remi - Repository with LAMP updated packages for RHEL/Centos/Fedora.
    • Software Collections - Community Release of Red Hat Software Collections. Provides updated packages of Ruby, Python, etc. for CentOS/Scientific Linux 6.x.


    Useful sysadmin related websites.

    • Ops School - Comprehensive program that will help you learn to be an operations engineer.
    • Digital Ocean Tutorials - A surprisingly vast resource for getting the basics of certain applications, tools, or even systems administration topics.


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