tgdl is a tool for downloading telegazeta, the teletext of Polish public TV. It can be useful for people who want to archive telegazeta and read it later.
Wężykiem-wężykiem is a generator of boards for a pen and paper game in which you have to go through the board and collect the letters of some text.
A powerful and easy-to-use firewall builder for Linux which uses an elegant language.
An ASCII art editor based on FIGlet.