You can message and share files inside your intranet without a server.
Search, Download, Play, Share on Bittorrent and the cloud
Document Management System and Content Management System
Development toolkit for Web Services and XML data bindings for C & C++
Database Replication, Filtered Synchronization, and Transformation
Linux designed to defeat state censorship and surveillance.
UFONet - Denial of Service Toolkit
MBSE BBS is a full FTN-capable ANSI BBS and mailer package.
Remote web interfaced file manager
It's the simple cloud.
AEBL is a mobile media distribution system
one server framework
Small ANSI C lib for dropbox/windows azure communication
Simple open source php based HTML5 rich web chat system
Open Source Enterprise Content Management ECM
Multi-protocol server written in Java