These are in active(ish) development.
Do you know what you've done and when you did it? Document your life with DidWhatWhen.
A mailing list manager, designed specifically for managing one-way lists such as newsletters.
Currently in the early stages of development, CVSite will be a candidate-focused searchable CV repository.
These are no longer in active development, but you never know when I might get bored and revisit one.
A utility to aid support engineers who use VNC.
A web-based bittorrent GUI implemented on top of the standard python client.
A AJAX-based calendar widget.
A simple test of the speed of different methods of outputting HTML in PHP.
An IRC bot, originally written in PHP, then rewritten in C++ and now re-implemented again in C#.
A toy that breaks an unbroken word into possible sentences.