Serendipity

Designed for users of all technical levels. Robust Editing Interface. Featuring an (optional) WSYISWG editor, image manager, extended entry support and a host of other features. Support for XML-RPC Editing. Support for both the Movable Type and Blogger XML-RPC APIs. You don't need to constantly wait while your weblogging system regenerates pages. Caching is dynamically managed, so you don't need to worry about it when publishing your weblog. Serendipity can accept, send and autodiscover trackbacks and pingbacks. A robust plugin system allows you to modify Serendipity without digging through the source code. Serendipity supports MySQL, PostgreSQL and SQLlite database backends. Multiple users can edit and administrate the weblog. Serendipity is available in both German and English, and adding new translations is a snap. Serendipity fully support for XHTML 1.0, CSS 2.0, RSS 0.93, 1.0, and 2 

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