Snipplr is a public source code repository that gives you a place to store and organize all the little pieces of code that you use each day. Best of all, it lets you share your code snippets with other coders and designers. Did we mention it works with TextMate, too? It's code 2.0.
This is a nice collection of useful XSLT transforms, models and reusable fragments under GPL, involving HTML tables, XML Schema, HTML GUI, MathML, SQL analogy, etc. This has been developped as part of the "Worlwide Botanical Knowledge Base" project, ( htt