Foswiki Notes
Foswiki is a fork of TWiki that was created in 2008.
The split happened due to disagreements within the TWiki community about governance and development direction. A significant portion of TWiki's core development team and community members decided to fork the project, creating Foswiki as a separate open-source wiki platform.
The key connection is that Foswiki started from the same TWiki codebase, so they share:
Similar architecture and Perl-based implementation
Compatible data structures and file formats (at least initially)
Similar markup syntax and features
Many of the same concepts (webs, topics, plugins, etc.)
After the fork, both projects continued independent development. Foswiki was positioned as having a more community-driven governance model, while TWiki continued under its existing leadership.
Since you've been working on TWiki migration and containerization, you might find that Foswiki could be a potential migration target - the shared ancestry means there are tools and documentation for migrating from TWiki to Foswiki, though the projects have diverged over the years since 2008.