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Serendipity vs Textpattern: catalog facts
Serendipity	Textpattern
Free Free and open source under the BSD 3-Clause licence.	Free Free and open source under the GPL-2.0 licence.
Self-hosted	Self-hosted
Long track record since 2002 Plugin and theme repository installable from the admin	Tag-based templates with clean HTML output Lean core extendable with plugins
Smaller community than WordPress Classic PHP blog design rather than a modern headless setup	Requires PHP and MySQL hosting Smaller plugin and theme ecosystem than larger CMSes
Self-hosted	Self-hosted
Open source	Open source
License: BSD-3-Clause	License: GPL-2.0
Not stated if an account is needed	No account 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.