Textpattern CMS support forum
A little plugin that add the select2 library to the txp backend (category and write tab) that let you use the search functionality into the select category, that can help you if you have project that use a bunch of categories (like me).
It uses the CDN to include the library, but if you want to use local file instead is possible by a modifying 2 lines of code.
Here is the first release :
Hope it could be useful.