Blogging engines:
- Thraxil weblog engine - Perl/PostgreSQL/GPL.
- Wordpress - PHP/MySQL/GPL.
- Blosxom - Perl/flat files/open
- PyBlosxom - Python/flat files/open. Runs this blog.
- Movable Type - Perl/semi-commercial
- Grey Matter - Perl/nearly-open
- Roller - Java/JDBC/open
- Livejournal - Perl/Apache/mod_perl/MySQL/open
- Bryar - Perl/flat files/open
- Addendat - Perl/GPL
Asymptomatic Blog Software Breakdown provides a good list of blogging options in more detail, although it's biased towards PHP blogging software. I've tried to focus on interesting options that aren't listed there, although with some overlap.
