A database-store and accompanying RESTful query API for archiving and retrieving VOEvent packets.
voeventdb comes with a full set of documentation, available at http://voeventdb.readthedocs.org. If you're new to voeventdb, or have never even heard of a VOEvent, start with the introduction page.
If you just want to query our VOEvent archive, rather than running your own, then you should probably check out the Python-client-package, voeventdb.remote.
GPL v2 (see licence file).
If you'd like to use voeventdb (or the REST API provided at http://voeventdb.4pisky.org/) for work leading to a publication then I would appreciate you getting in touch so that I can arrange a suitable ASCL entry or other DOI for citing.
Thanks to Sergey Koposov for making the q3c library publicly available, which powers the cone-search feature of voeventdb.