Geneweb allows keeping track of ancestral data. It is a powerful system for maintaining a set of data about your family history. It supports much of the GEDCOM tag system for data storage, and can be used either as your primary system for archiving genealogical data, or as a web service (through a CGI interface) for publishing your data for others to use.

The GNU Mailing List Manager, which manages email discussion lists much like Majordomo and Smartmail. Unlike most similar products, Mailman gives each mailing list a web page, and allows users to subscribe, unsubscribe, etc. over the web. Even the list manager can administer his or her list entirely from the web.

Modsecurity is an Apache module whose purpose is to tighten the Web application security. Effectively, it is an intrusion detection and prevention system for the web server.

Python-instagram contains the Python bindings to access the Instagram REST and Search API.