Open Source SysAdmin Resources

Automation

Automation build.

• Apache Ant – Automation build tool, similar to make, written in Java.
• Apache Maven – Build automation tool mainly for Java.
• Bazel – Google’s build system.
• GNU Make – The most popular automation build tool for many purposes.
• Gradle – Another build automation system.

Backups

Backup software.

• Amanda – Client-server model backup tool.
• Attic – A deduplicating backup program written in Python.
• Bareos – A fork of Bacula backup tool.
• Backupninja – Lightweight, extensible meta-backup system.
• Brebis – A fully automated backup checker
• Burp – Network backup and restore program.
• Duplicity – Encrypted bandwidth-efficient backup using the rsync algorithm.
• Elkarbackup – Backup solution based on RSnapshot with a simple web interface
• Lsyncd – File Monitor which spawns a process to synchronize the changes (rsync by default).
• Obnam – An easy, secure, snapshots-based backup program with data de-duplication.
• Rdiff-backup – An easy A remote incremental backup of all your files.
• Rsnapshot – Filesystem Snapshotting Utility.
• Snebu – Snapshot backup with global multi-client deduplication and transparent compression.
• UrBackup – Another client-server backup system.
• DREBS – AWS EBS backup script that supports strategies.
• ZBackup – A versatile deduplicating backup tool.
  

Build and software organization tools

Build and software organization tools.

• EasyBuild – EasyBuild builds software and modulefiles for High Performance Computing (HPC) systems in an efficient way.
• environment-modules Lmod – Lmod is a Lua based module system that easily handles the MODULEPATH Hierarchical problem.
• HPCBIOS – HPCBIOS is an effort to setup a common, well-documented and reproducible, environment spanning across multiple HPC systems & sites, inclusive of documentation.

ChatOps

Conversation-driven development and management. See https://www.reddit.com/r/chatops for more information.

• CloudBot – The simple, fast, expandable Python IRC bot.
• Eggdrop – the world’s most popular IRC bot, designed for flexibility and ease of use, and is freely distributable under the GNU GPL.
• 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.

Client management

Managing software on desktop computers.

• OCS Inventory NG – Inventory, deployment and network scan.
• Opsi (open PC server integration) – Client Management for Windows based on Debian.
• WAPT – Network-wide (un)installation, configuration and upgrades of Windows based software.
• WPKG – Software deployment, upgrade and removal program for Windows.

Cloning

Cloning software.

• Clonezilla – Partition and disk imaging/cloning program.
• Fog – Another computer cloning solution.

Cloud Computing

• AppScale – 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.
• Cracow Cloud One – Polish Private Cloud – The CC1 system provides a complete solution for Private Cloud Computing.
• Eucalyptus – Private cloud software with AWS compatibility.
• Flynn – PaaS
• Mesos – Develop and run resource-efficient distributed systems.
• OpenNebula – User-driven cloud management platform for sysadmins and devops.
• Openshift – PaaS product from Red Hat.
• OpenStack – Build private and public clouds.
• The Foreman – Complete lifecycle management tool for physical and virtual servers. FOSS.
• Tsuru – Tsuru is an extensible Platform as a Service software.

Cloud Orchestration

• BOSH – IaaS orchestration platform originally written for deploying and managing Cloud Foundry PaaS, but also useful for general purpose distributed systems.
• Cloudify – TOSCA-based cloud orchestration software platform written in Python and YAML.
• CloudSlang – Flow-based orchestration tool for managing deployed applications, with Docker capabilities.
• 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.
• StackStorm – Event Driven Operations and ChatOps platform for infrastructure management. Written in Python

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.
• ownCloud – Provides universal access to your files via the web, your computer or your mobile devices.
• Pydio – Pydio (formerly AjaXplorer) is a mature solution for file sharing and synchronization.
• Seafile – Another 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 – 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 – Available as free software under the MIT License.

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.

• i-doit – IT Documentation and CMDB.
• iTop – Complete ITIL web based service management tool.
• Ralph – Asset management, DCIM and CMDB system for large Data Centers as well as smaller LAN networks.
• 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.

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.
• 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.
• 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 – Continuous delivery server.
• Jenkins – An extendable continuous integration server.

Control Panels

Web hosting and server or service control panels

• Web hosting
  • 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.
• DNS
  • Atomia DNS – DNS management system.
  • PDNS Gui – WebGUI which aids in administering domains and records for PowerDNS with MySQL.
  • Poweradmin – Friendly web-based DNS administration tool for PowerDNS server.
• Revision Control
  • iF.SVNAdmin – WebGUI to manage Subversion repositories and User/Group permissions.
  • SCM-Manager – The easiest way to share and manage your Git, Mercurial and Subversion repositories.
  • WebSVN – Opensource web subversion repository browser.
• Virtualization
  • Feathur – VPS Provisioning and Management Software.
  • Panamax – Project that makes deploying complex containerized apps as easy as Drag-and-Drop.
  • OpenVZ Web Panel – Web panel to control your OpenVZ servers.
  • Virtkick – A simple orchestrator. Manage virtual machines or Docker containers easily.
  • WebVirtMgr – libvirt-based Web interface for managing virtual machines.
• Server
  • Ajenti – Control panel for Linux and BSD.
  • Cockpit – New multi-server web interface for Linux servers written in C.
  • Virtualmin – Control panel for Linux based on webmin.
  • Webmin – Linux server control panel.
• Others

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).

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 – 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

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.

Editors

Open source code editors.

• Atom – A hackable text editor from Github.
• Brackets – 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.
• jotgit – Git-backed real-time collaborative code editing.
• KDevelop – IDE by the people behind KDE.
• Light Table – The next generation code editor.
• Lime – Aims to provide an open source solution to Sublime Text
• TextMate – A graphical text editor for OS X.
• Vim – A highly configurable text editor built to enable efficient editing.

Identity Management

LDAP servers and other tools to manage accounts and identities.

LDAP

• 389 Directory Server – Developed by Red Hat.
• Apache Directory Server – Apache Software Foundation project written in Java.
• OpenDJ – Fork of OpenDS.
• OpenDS – Another directory server written in Java.
• OpenLDAP – Developed by the OpenLDAP Project.

Tools and web interfaces

• Fusion Directory – Improve the Management of the services and the company directory based on OpenLDAP.
• FreeIPA – Security management solution, can manage LDAP, KRB, DNS, sudo, and more
• LDAP Account Manager (LAM) – Web frontend for managing entries (e.g. users, groups, DHCP settings) stored in an LDAP directory.
• Samba – Active Directory and CIFS protocol implementation.

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.
• 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.

Log Management

Log management tools: collect, parse, visualize …

• 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 Clients

• Claws Mail – Old school email client (and news reader), based on GTK+.
• Mutt – Small but very powerful text-based mail client.
• Thunderbird – Free email application that’s easy to set up and customize.

Webmail

Webmail applications.

• Roundcube – Browser-based IMAP client with an application-like user interface.
• SquirrelMail – Another browser-based IMAP client.
• Horde – Webmail and groupware client
• Rainloop – Very nice webmail with IMAP/SMTP Support and multi accounting

Mail Servers

Software for setting up mail servers.

 

MDA (IMAP/POP3)

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.

MTA (SMTP)

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 – 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

Software for simple deployment of a mail server, e.g. for inexperienced or impatient admins.

• hMailServer – Open source e-mail server for Microsoft Windows
• 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.
• Citadel – Feature packed, easy, versatile, and powerful mail server, thanks to exclusive “rooms” based architecture.
• Modoboa – Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.
• Fufix – Fufix is a mailserver installer based on Dovecot, Postfix, Postfixadmin, Nginx, PHP, MySQL and Fail2ban.

Monitoring

Monitoring software.

• Alerta – Distributed, scaleable and flexible monitoring system.
• Cacti – Web-based network monitoring and graphing tool.
• Cabot – Monitoring and alerts, similar to PagerDuty.
• check_mk – Collection of extensions for Nagios.
• Dash – A low-overhead monitoring web dashboard for a GNU/Linux machine.
• Flapjack – Monitoring notification routing & event processing system.
• Icinga – Fork of Nagios.
• LibreNMS – Fully featured network monitoring system that provides a wealth of features and device support.
• Monit – Small 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.
• OMD – The Open Monitoring Distribution.
• PhpSysInfo – A customizable PHP script that displays information about your system nicely
• Riemann – Flexible and fast events processor allowing complex events/metrics analysis.
• Sensu – Monitoring framework.
• Sentry – Application monitoring, event logging and aggregation.
• ServerStatus BotoX – Display and monitor your servers statistics in a beatiful way.
• ServerStatus moejda – Server Status website script, displays uptime (days), free RAM, free HDD
• Shinken – Another monitoring framework.
• Thruk – Multibackend monitoring web interface with support for Naemon, Nagios, Icinga and Shinken.
• 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.

 

Metric & Metric Collection

Metric gathering and display software.

• Collectd – System statistic collection daemon.
• Collectl – High precision system performance metrics collecting tool.
• Dashing – Ruby gem that allows for rapid statistical dashboard development. An all HTML5 approach allows for big screen displays in data centers or conference rooms.
• 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 – Scalable graphing server.
• InfluxDB – Distributed time series database with no external dependencies.
• KairosDB – Fast distributed scalable time series database, fork of OpenTSDB 1.x.
• 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 – 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.
• Oxidized – A modern take on network device configuration monitoring with web interface and GIT storage.
• 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.

Newsletters

Newsletter software.

• DadaMail – Mailing List Manager, written in Perl.
• phpList – Newsletter manager written in PHP.
• LibreMailer – Libre Mailer is a modest and simple web based email marketing application.
• Lewsnetter – E-mail marketing application (create and send e-mail newsletter via SES). Includes subscription management, delivery, bounce and complaint notification, templates, and some stats.

NoSQL

NoSQL databases.

• Column-Family
  • 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 – Distributed document store database, focuses on JSON.
• Graph
  • FlockDB – Twitter’s distributed, fault-tolerant graph database.
  • Neo4j – Graph database.
• Key-Value
  • 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.

Packaging

• 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.

Project Management

Web-based project management and bug tracking systems.

• CaseBox – Manage all your organisation’s information in one system.
• 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.
• Phabricator Written in PHP.
• Redmine – Written in ruby on rails.
• Taiga – Agile Project Management Tool based on the Kanban and Scrum methods.
• The Bug Genie – Written in PHP.
• Trac – Written in python.

Queuing

• ActiveMQ – Java message broker.
• BeanstalkD – A simple, fast work queue.
• Gearman – Fast multi-language queuing/job processing platform.
• Kafka – Extremely high performance publish/subscribe message system.
• NSQ – A realtime distributed messaging platform.
• RabbitMQ – Robust, fully featured, cross distro queuing system.
• ZeroMQ – Lightweight queuing system.

RDBMS

Relational DBMS.

• Firebird – True universal 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.
• Percona Server – Enhanced, drop-in MySQL replacement.
• PostgreSQL – Object-relational database management system (ORDBMS).
• PostgreSQL-XL – Scalable PostgreSQL-based database cluster.
• SQLite – Library that implements a self-contained, serverless, zero-configuration, transactional SQL DBS.

Security

Security tools.

• Blackbox – Safely store secrets in Git/Mercurial. Provides tooling to automatically encrypt secrets like passwords.
• Bro – Bro is a powerful framework for network analysis and security monitoring.
• 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.
• Linux Malware Detect – A malware scanner for Linux designed around the threats faced in shared hosted environments.
• 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 – Network intrusion prevention system (NIPS) and network intrusion detection system (NIDS).
• SpamAssassin – A powerful and popular email spam filter employing a variety of detection technique.

 

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.
• etcd – distributed K/V-Store, authenticating via SSL PKI and a REST HTTP Api for shared configuration and service discovery.
• ZooKeeper – ZooKeeper is a centralized service for maintaining configuration information, naming, providing distributed synchronization, and providing group services.

 

Software Containers

Operating system–level virtualization.

• Docker – Platform for developers and sysadmins to build, ship, and run distributed applications.
• LXC – Userspace interface for the Linux kernel containment features.
• OpenVZ – Container-based virtualization for Linux.

 

SSH

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.
• ssh-cert-authority – A democratic SSH certificate authority.
• ssh-ca – Allows giving ssh access to servers without putting a users key on the server, as well as expiring access.
• 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.

 

Statistics

Analytics software.

• 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 web server log file analysis.

 

Status Pages

• Cachet – Status page system written in PHP.
• Stashboard – Status page for cloud services and APIs.
• System Status Dashboard (SSD) – Overview about an organization’s infrastructure health status.
• Staytus – Staytus is a complete solution for publishing the latest information about any issues with your web applications, networks or services.

 

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.
• Request Tracker – Ticket-tracking system written in Perl.
• TheBugGenie – Ticket system with extensive user rights system.

Troubleshooting

Troubleshooting Tools.

• grml – bootable Debian Live CD with powerful CLI 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.

 

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

Virtualization software.

• Archipel – XMPP based virtualization management platform.
• ConVirt – Provides the core functionality for centrally managing your KVM or Xen virtualized environment.
• 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 – Virtualization management solution.
• QEMU – QEMU is a generic 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

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.

 

XMPP

XMPP servers.

• ejabberd – XMPP instant messaging server written in Erlang/OTP.
• Metronome IM – Fork of Prosody IM.
• MongooseIM – Fork of ejabberd.
• 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.

 

Web

Web servers.

• Apache – Most popular web server.
• 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.
• Varnish – HTTP based web application accelerator focusing on optimizing caching and compression.

Wiki Software

• 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 wiki that stores pages in a Git repository.
• PmWiki – Wiki-based system for collaborative creation and maintenance of websites.
• TiddlyWiki – Complete interactive wiki in JavaScript.