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Serendipity (originally named jBlog) was born at the end of 2002.

Serendipity is a PHP-powered weblog application in the default package, offering to more advanced users a flexible, expandable and easy-to-use framework with the power for professional applications.

Features include a plugin architecture, WYSIWYG editor, Smarty templates, anti-spam and comment moderation, multiple database support (SQLite, PostgreSQL, MySQL, MySQLi), shared installations (can power multiple blogs from just one codebase).

Serendipity is released under the BSD License.