OpenVPN
Virtual private network package.
Open WebMail
Webmail system based on Neomail. OpenX
Latest version of the popular php ad management system called phpAdsNew. OpenXava
Framework for developing database-backed web applications. Open-Xchange
Offers reliable and scalable messaging and advanced collaboration solutions. OptimalGrid
Research prototype of grid-enabled middleware. ORBIT2
CORBA 2.4-compliant Object Request Broker. orbitcpp
Provides a C++ CORBA mapping for ORBit2. Orbit Open Ad Server
Script that can be used to sell and serve ads on any website.
Orca
Extensible screen reader. Oregano
Application for schematic capture and simulation of electrical circuits. oRTP
A Real-time Transport Protocol (RTP) stack. osCommerce
Online shop e-commerce solution. oscope
Digital Oscilloscope via Sound Card and/or ProbeScope/osziFOX. osdsim
Linux Storage Device compliant with T10-OSD. Osmose
Osmose is a presentation tool distributed under the GPL license. OSSEC HIDS
Open Source Host-based Intrusion Detection System. oSync
Opera synchronizer and backup. ourl
Url completer for Netscape for Linux. OutKafe
A complete internet cafe management suite. oxine
GUI for the famous xine engine. oXygen XML Author
Multi platform Visual Editor of DITA, DocBook, TEI, XHTML. Oxygen XML Developer
Oxygen XML Developer is a multi platform Editor of DITA, DocBook, TEI, XHTML. oXygen XML Editor
Oxygen is a cross platform XML Editor and XSLT Debugger.