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Serendipity vs Antville: catalog facts
Serendipity	Antville
Free Free and open source under the BSD 3-Clause licence.	Free Free and open source software.
Self-hosted	Self-hosted
Long track record since 2002 Plugin and theme repository installable from the admin	Hosts many independent blogs on one installation Long-running project with a live public instance
Smaller community than WordPress Classic PHP blog design rather than a modern headless setup	Requires Helma Object Publisher and a relational database Uncommon technology stack compared with PHP blog engines
Self-hosted	Self-hosted
Open source	Open source
License: BSD-3-Clause	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.