Whoosh is a fast, featureful full-text indexing and searching library implemented in pure Python.
Some of Whoosh's features include:
* Pythonic API.
* Pure-Python. No compilation or binary packages needed, no mysterious crashes.
* Fielded indexing and search.
* Fast indexing and retrieval -- much faster than any other pure-Python solution.
* Pluggable scoring algorithm (including BM25F), text analysis, storage, posting format, etc.
* Powerful query language.
* Pure Python spell-checker.