libvfcgi is a library that implements FastCGI for GObject and Vala applications, written in Vala. It aims to fully implement the FastCGI specification and make FastCGI Web application servers accessible to Vala programmers and GObject C programmers. Note that while it is possible to use the library from GObject C, it is designed for use with Vala and may be tedious to use directly in C.
NSIA (Network System Integrity Analysis) is a Web application monitoring system that scans sites for potentially unwanted context such as defacements, unauthorized changes, errors, information leaks, profanity, and compliance issues. It operates as an IDS (Intrusion Detection System) for Web sites.
FEST JavaFX Compiler Maven Plug-in is a Maven plug-in for compiling JavaFX sources. It compiles JavaFX source and test files. It does not require the JavaFX distribution to be in a Maven repository (since, according to its license, only Oracle can distribute JavaFX). It does not require you to list all JavaFX libraries as dependencies in your pom.xml.
Miscellaneous Container Templates is a C++ library that provides a collection of various STL-like containers with specific properties. It currently contains six closely related containers: closed_hash_set, closed_hash_map, linked_hash_*, and forward_hash_*. The first two are very similar to TR1 unordered_set and unordered_map; the linked ones provide additional functionality, while forward hash tables are more performant than linked, but have a restricted interface.
Joker the IRC bot is a PHP class designed for quick and easy IRC bot construction. This base class contains methods that can be executed from your plugins. It has built-in flood protection, timers, and a powerful plugin system that allows you to reload plugin classes on-the-fly, without restarting the PHP console or disconnecting from the network.