Parasite was a fun project that provided some useful live-debugging tools for GTK-based applications. It was such a success that now it's part of GTK itself.
GtkInspector is the successor to Parasite. It's actively maintained and far more useful. Parasite itself has been shut down.
Want to see what the developers of Parasite are now up to? Well, we started a company called Beanbag, where we build other awesome development tools.
Our main product is Review Board, a widely-used tool for code and document review. This takes up most of our time.
The little Parasite guy lives on as the Splat bug, heading up our bug tracker, Splat.
Want to follow what I'm up to personally? Here's my Twitter!.
Have a good day!