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OpenLDAP Featured

www.openldap.org

OpenLDAP OpenLDAP Software is a free, open source implementation of the Lightweight Directory Access Protocol (LDAP) developed by the OpenLDAP Project. It is released under its own license called the OpenLDAP Public License. LDAP is a platform-independent protocol ...

Category:Directory services
Alternative toActive Directory, SunOne

Mozilla Firefox

www.mozilla.com/en-US/firefox/

Mozilla Firefox Mozilla Firefox (abbreviated officially as Fx, but also commonly as FF) is a free web browser descended from the Mozilla Application Suite, managed by the Mozilla Corporation. Firefox had 19.03% of the recorded usage share of web browsers as of June 2008, ...

Category:Internet browsers
Alternative toInternet Explorer, Opera, Safari

Apache HTTP Server Featured

www.apache.org

Apache HTTP Server The Apache HTTP Server, commonly referred to simply as Apache, is a web server notable for playing a key role in the initial growth of the World Wide Web. Apache is primarily used to serve both static content and dynamic Web pages on the World Wide Web ...

Category:Web servers
Alternative toMS IIS

KDE

www.kde.org

KDE KDE (K Desktop Environment) is a free software project which aims to be a powerful system for an easy-to-use desktop environment. The goal of the project is to provide basic desktop functions and applications for daily needs as well as tools and documenta ...

Category:Environments
Alternative toWindows XP/Vista, OSX

Gnome

www.gnome.org

Gnome Gnome is an international effort to build a complete desktop environment—the graphical user interface which sits on top of a computer operating system—entirely from free software. This goal includes creating software development frameworks, selecting ...

Category:Environments
Alternative toWindows XP/Vista, OSX

Debian GNU/Linux Featured

www.debian.org

Debian GNU/Linux Debian is an operating system (OS) composed entirely of software which is both free and open source (FOSS). Its primary form, Debian GNU/Linux, is a popular and influential Linux distribution. Debian is known for strict adherence to the Unix and free s ...

Category:Linux

Ubuntu

www.ubuntu.com

Ubuntu Ubuntu is an operating system for desktops, laptops, and servers. It has consistently been rated among the most popular of the many Linux distributions. Ubuntu's goals include providing an up-to-date yet stable Linux distribution for the average user a ...

Category:Linux

FreeBSD

www.freebsd.org

FreeBSD FreeBSD is a Unix-like free operating system descended from AT&T UNIX via the Berkeley Software Distribution (BSD) branch through the 386BSD and 4.4BSD operating systems. It runs on Intel x86 family (IA-32) IBM PC compatible computers, DEC Alpha, Sun Ultr ...

Category:BSD

Nagios

www.nagios.org

Nagios Nagios is a popular open source computer system and network monitoring application software. It watches hosts and services that you specify, alerting you when things go bad and again when they get better. Nagios, originally created under the name NetSa ...

Category:Telemetry

Snort

www.snort.org/

Snort Snort is a free and open source Network Intrusion prevention system (NIPS) and network intrusion detection (NIDS) capable of performing packet logging and real-time traffic analysis on IP networks.

Category:Security

VLC

www.videolan.org/

VLC VLC media player is a free software media player written by the VideoLAN project. It is a portable multimedia player, encoder, and streamer supporting many audio and video codecs and file formats as well as DVDs, VCDs, and various streaming protocols. It ...

Category:Multi-media

The GIMP

www.gimp.org/

The GIMP The GNU Image Manipulation Program, or GIMP, is a raster graphics editor used to process digital graphics and photographs. Typical uses include creating graphics and logos, resizing and cropping photos, altering colours, combining multiple images, removin ...

Category:Presentation software
Alternative toAdobe PhotoShop

SugarCRM

www.sugarcrm.com/

SugarCRM SugarCRM develops CRM software in three versions: Sugar Community Edition Sugar Professional Sugar Enterprise. Each product is produced from the same code tree with Sugar Community Edition containing roughly 85 percent of the funct ...

Category:CRM
Alternative toMicrosoft Dynamics, Salesforce

SpamAssassin

spamassassin.apache.org/

SpamAssassin SpamAssassin is regarded by some as one of the most effective spam filters, especially when used in combination with spam databases. While simple text-matching alone may, for most users, be sufficient to correctly classify a majority of incoming mail the ...

Category:Anti-spam
Alternative toSunbelt iHateSpam

Cyrus IMAP

cyrusimap.web.cmu.edu/

Cyrus IMAP The Cyrus IMAP server differs from other IMAP server implementations in that it is generally intended to be run on sealed servers, where normal users are not permitted to log in. The mail spool uses a filesystem layout and format similar to the Maildir fo ...

Category:Mailstore
Alternative toMicrosoft Exchange, Groupwise

TuxPaint

www.tuxpaint.org/

TuxPaint Tux Paint is a free and open source bitmap graphics editor (a program for creating and processing raster graphics) geared towards young children. It is licensed under the GNU General Public License, and seen by many as a free-software alternative to a sim ...

Category:Specialist applications

OSSEC

www.ossec.net

OSSEC OSSEC is a scalable, multi-platform, open source Host-based Intrusion Detection System (HIDS). It has a powerful correlation and analysis engine, integrating log analysis, file integrity checking, Windows registry monitoring, centralized policy enforcemen ...

Category:Security

Moodle Featured

moodle.org/

Moodle Moodle is a free software e-learning platform (also known as a Course Management System (CMS), or Learning Management Systems (LMS), or Virtual Learning Environment (VLE)). It has a significant user base with 38,896 registered sites with 16,927,590 users ...

Category:Virtual Learning Environments
Alternative toFacility VLE, Kaleidos VTLE,

Plone

www.plone.org

Plone Plone is a free and open source content management system built on top of the Zope application server. It is suited for an internal website or may be used as a server on the Internet, playing such roles as a document publishing system and groupware collab ...

Category:CMS

Samba

www.samba.org

Samba Samba is a free software re-implementation of SMB/CIFS networking protocol, originally developed by Australian Andrew Tridgell. Samba is released under the GNU General Public License. The name Samba comes from SMB (Server Message Block), the name of the s ...

Category:File serving
Alternative toWindows Server