PerlDaemon is a minimal Unix daemon framework. It can be programmed in Perl to perform any task. It supports automatic daemonizing, logging and logrotate support, clean shutdown, and PID files (including a check on startup). It's easy to configure and easy to extend by customizing the daemonloop subroutine.
mdp stands for "Mot de Passe", which means "password" in French. It wraps GnuPG for encryption and deals with all the small details of generating, managing, and fetching your passwords. It is similar to many other programs, but differentiates itself with simplicity (not button-driven simplicity, but with a Unix less-is-more style). For example, beyond the use of GnuPG for encryption, it lets you use your own editor to manage your passwords, categorize them, and delete them. In order to avoid passwords lingering on your screen, the results from the queries are displayed through a custom pager which is cleared after a customizable timeout (defaulting to ten seconds).