The SignServer is an application for server side signatures called by other systems. It is flexible and can be customized to specific needs. The SignServer have a ready to use TimeStamp server and signers for PDF, XML, ODF, PGP, OOXML and MRTD (ePassport DS).
Open Source Enterprise Wiki and Web Application Platform
Enterprise collaboration platform with over 400 extensions. Users without programming skills can create web applications. 50,000 small businesses, many Fortune 500 companies, and millions of people use TWiki, with installations of 100,000s of pages. Visit http://twiki.org/ for the open source TWiki.
The TWiki community is focusing on building the best collaboration platform for the workplace. We invite you to GET INVOLVED! More at http://bit.ly/twGetInv.
Fudge Together is an open-source CMS (Content Management System) which is written in the PHP language. It contains advanced - yet simple - site-building software, blog functions, image galleries, file management and manipulation systems.