NullLogic Groupware is a Web-based groupware package designed for contact management and event scheduling, which seeks to actively promote communication between its users via private messaging and public discussion forums. It also includes a simple order processing system. PostgreSQL, MySQL and ODBC are supported, and Linux and Windows versions are available.
NSP code looks a lot like php (the same basic c operators, syntax and flow control) but with a lot less dollar signs. Internally, NSP has a very clean API that makes it easy for c programs to make full use of its functions and data.
Null Webmail is a simple yet powerful webmail CGI written in C. Null Webmail is platform-independent and offers language support for English, French, Spanish, German, Danish, Finnish, Galician, Italian, Netherland and Polish.
Null httpd is a very small, simple and multithreaded web server for Linux and Windows.
Here are some game prototypes made in Unity.