XTemplate is a template engine for PHP which allows you to store your HTML code apart from your PHP code. It has many useful features such as nested blocks and various kinds of variable interpolation, and yet the code is very short and very optimized. It includes several examples and was written with an attempt at being easy to understand. The basic syntax is from FastTemplate and QuickTemplate but the entire class was written from scratch without code from other template engines.
DAPACT (Data Aware Processing And Control Tags) is a set of JSP tags for simplifying the display of dynamic content in JSP pages. It focuses on retrieving data to be displayed, iterating over that data, and in providing control tags for changing what is displayed. (Though the initial 0.2 release does not have the control tags yet.)
Verse is a network protocol and client/server application architecture for multiuser realtime distributed 3D graphics applications. It uses a lightweight server to store world data, and then relies on clients to connect and use the data in various ways. Verse uses subdivision surfaces as its single geometric primitive, which both conserves bandwidth and allows very good scalability and visual quality on modern 3D hardware.