The Horde notes and memos application.

Mnemo is the Horde notes and memos application. It lets users keep
free-text notes and other bits of information which doesn't fit as a
contact, a todo item, an event, etc. It is very similar in functionality
to the Palm Memo application.
The Horde Project writes web applications in PHP and releases them under
Open Source licenses.  For more information (including help with Mnemo)
please visit http://www.horde.org/.

WWW: http://www.horde.org