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WordPress vs Serendipity: catalog facts
WordPress	Serendipity
Free Free and open source under the GPL; you pay only for your own hosting.	Free Free and open source under the BSD 3-Clause licence.
Self-hosted	Self-hosted
Very large library of themes and plugins Visual block editor with live preview	Long track record since 2002 Plugin and theme repository installable from the admin
Needs a PHP and database server to self-host Plugins and themes vary widely in quality and need updating	Smaller community than WordPress Classic PHP blog design rather than a modern headless setup
Self-hosted	Self-hosted
Open source	Open source
License: GPL-2.0	License: BSD-3-Clause
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.