Changelog is a project mainly written in Perl, it's free.
A Perl script to comfortably maintain a change log.
changelog is a Perl script that adds/updates entries in a change log (aka motd). The current version is 0.1b2.
Either run
changelog my entry text
which adds 'my entry text' to today's entry with the currently logged in user.
Or just
changelog
which will ask you for the entries interactively. You can also enter more than one entry by using the return key.
Other options are: