NapShare is still supported, you can help by writing code and submitting patches. It's a spare time - free thing.
NapShare now uses the GWebCache system to find new hosts to connect to. Startup problems are a thing of the past.
The new version is available at the site, if you are within a few days of this post you should pick up the current CVS version by anon CVS.
Enjoy!
http://napshare.sourceforge.net/