Akson is a PyGtk/PyLibgadu based Polish IM protocol Gadu-Gadu client
BenMail is simple and fast Python/Qt based email client. Features multi-languge support, MIME attachments, multiple accounts, threading. It is thought to be very extensible.
Dendron the Gadu-Gadu server
python wrappers to libgadu library for Polish IM Gadu-Gadu with threads callbacks etc.