Mailman 2 (from Debian) with LMTP patches.
Debian package for github.com/Lusitaniae/apache_exporter.
Simple chroot'ing replacement for suexec.
Suexec wrapper with advanced sandboxing features.
Cron job runner with some useful features.
Simple shell-based firewall generator for hosts.
Simple standalone Dovecot/SASL server (for Postfix SMTP authentication) that uses PAM.
A simple HTTP service, used for testing.
PAM module for git.autistici.org/id/auth.