HyperKitty

HyperKitty is a Django‑based web application that serves as the archiver for GNU Mailman 3. It provides a browsable interface to mailing‑list archives, allowing users to view threads, start new discussions, reply to existing messages, mark favorites, and perform full‑text searches across the stored mail. The system can operate as part of a full Mailman 3 deployment or run independently as a standalone forum‑style site, requiring only the hyperkitty and hyperkitty_standalone packages.

The software is intended for mailing‑list administrators and participants who need a modern, web‑friendly way to access and interact with list history. Its design emphasizes usability, offering features such as page comments, attachment handling, TinyURL generation, and export options, while remaining compatible with any Django project.

HyperKitty is released under GPL‑3.0, is self‑hostable, and can be deployed without a subscription or tiered pricing. The project is stable, open‑source, and maintained by the Fedora community, with source code and development resources hosted on GitLab.