* [Cassandra](http://cassandra.apache.org/) - Distributed DBMS designed to handle large amounts of data across many servers.
@ -131,7 +129,7 @@ A curated list of amazingly awesome sysadmin open source resources inspired by [
Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-vs-redis
### RDBMS
## RDBMS
*Relational DBMS.*
* [MariaDB](https://mariadb.org/) - Community-developed fork of the MySQL.
@ -140,7 +138,7 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
* [PostgreSQL](http://www.postgresql.org/) - Object-relational database management system (ORDBMS).
* [SQLite](http://sqlite.org/) - Library that implements a self-contained, serverless, zero-configuration, transactional SQL DBS.
### SMTP
## SMTP
*SMTP servers.*
* [Exim](http://www.exim.org/) - Message transfer agent (MTA) developed at the University of Cambridge.
@ -148,19 +146,19 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
* [Postfix](http://www.postfix.org/) - Fast, easy to administer, and secure Sendmail replacement.
* [Sendmail](http://www.sendmail.com/sm/open_source/) - Message transfer agent (MTA).
### SSH
## SSH
*SSH tools.*
* [Cluster SSH](http://sourceforge.net/projects/clusterssh/) - Controls a number of xterm windows via a single graphical console.
* [parallel-ssh](http://code.google.com/p/parallel-ssh/) - Provides parallel versions of OpenSSH and related tools.
* [SSH Power Tool](http://code.google.com/p/sshpt/) - Execute commands and upload files to many servers simultaneously without using pre-shared keys.
### Statistics
## Statistics
*Analytics software.*
* [Piwik](http://piwik.org/) - Free and open source web analytics application.
### Ticketing systems
## Ticketing systems
*Web-based ticketing system.*
* [Bugzilla](http://www.bugzilla.org/) - General-purpose bugtracker and testing tool originally developed and used by the Mozilla project.
@ -168,26 +166,26 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
* [osTicket](http://osticket.com/) - Open source support ticket system.
* [Request Tracker](http://www.bestpractical.com/rt/) - Ticket-tracking system written in Perl.
### Troubleshooting
## Troubleshooting
*Troubleshooting Tools.*
* [Sysdig](http://www.sysdig.org/) - Capture system state and activity from a running Linux instance, then save, filter and analyze.
### Project Management
## Project Management
*Web-based project management and bug tracking systems.*
* [Redmine](http://www.redmine.org/) - Written in ruby on rails.
* [The Bug Genie](http://www.thebuggenie.com/) - Written in PHP.
* [Trac](http://trac.edgewall.org/) - Written in python.
### Version control
## Version control
*Software versioning and revision control.*
* [Git](http://git-scm.com/) - Distributed revision control and source code management (SCM) with an emphasis on speed.
* [Mercurial](http://mercurial.selenic.com/) - Another distributed revision control.
* [Subversion](http://subversion.apache.org/) - Client-server revision control system.
### Virtualization
## Virtualization
*Virtualization software.*
* [KVM](http://www.linux-kvm.org) - Linux kernel virtualization infrastructure.
@ -195,19 +193,19 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
* [VirtualBox](https://www.virtualbox.org/) - Virtualization product from Oracle Corporation.
* [Xen](http://www.xenproject.org/) - Virtual machine monitor for 32/64 bit Intel / AMD (IA 64) and PowerPC 970 architectures.
### VPN
## VPN
*VPN software.*
* [OpenVPN](https://community.openvpn.net) - Uses a custom security protocol that utilizes SSL/TLS for key exchange.
* [strongSwan](http://www.strongswan.org/) - Complete IPsec implementation for Linux.
### Webmails
## Webmails
*Webmail applications.*
* [RainLoop](http://rainloop.net/) - Simple, modern & fast web-based IMAP client.
* [Roundcube](http://roundcube.net/) - Browser-based IMAP client with an application-like user interface.
### Web
## Web
*Web servers.*
* [Apache](http://httpd.apache.org/) - Most popular web server.
@ -215,23 +213,28 @@ Comparison of NoSQL servers: http://kkovacs.eu/cassandra-vs-mongodb-vs-couchdb-v
* [Lighttpd](http://www.lighttpd.net/) - Web server more optimized for speed-critical environments.
* [Nginx](http://nginx.org/) - Reverse proxy, load balancer, HTTP cache, and web server.
### Wikis
## Wikis
*Wiki software.*
* [DokuWiki](https://www.dokuwiki.org/dokuwiki) - Simple to use and highly versatile wiki that doesn't require a database.
* [Mediawiki](http://www.mediawiki.org/wiki/MediaWiki) - Used to power Wikipedia.
## Resources
# Resources
Various resources, such as books, websites and articles, for improving your skills and knowledge.
### Editors
## Books
*Sysadmin related books.*
* [The Phoenix Project: A Novel about IT, DevOps, and Helping Your Business Win](http://itrevolution.com/books/phoenix-project-devops-book/) - How DevOps techniques can fix the problems that happen in IT organizations.
## Editors
*Open source code editors.*
* [Atom](https://atom.io/) - A hackable text editor from Github.
* [Brackets](http://brackets.io/) - Open source code editor for web designers and front-end developers.
* [Geany](http://www.geany.org/) - GTK2 text editor.
### Websites
## Websites
*Useful sysadmin related websites.*
* [Ops School](http://www.opsschool.org) - Comprehensive program that will help you learn to be an operations engineer.