Sprout
This is a common Python library which contains reusable components, developed at Infrae. It consists of pure Python code, but for convenience can be installed as a Zope module as well.
Sprout's focus is mainly currently XML related. It features:
- sprout.saxext, a library to make writing SAX-based code more easy.
- htmlsubset, a system to easily create HTML-ish subsets that are secure and robust to wrong user input.