Server/daemon icon seconded, for projects like djbdns or siproxd.
See also the Support for mercurial request thread, and Making Ohloh Open Source.
I added enlistments for FreeBSD and FreeBSD Ports a few days ago, and both downloaded for a while (getting to several thousand revisions), but then failed with the message "Downloading source code history (Failed)".
What's going on there?
+1
Many smaller projects don't have public repositories.
Mercurial: 4974, 5255
The latter duplicate was created by osde.info.
+1 (some notable Mercurial users, for reference)