It seems to be one of the first full-featured commercial applications developed using Mono.
One of the features I really liked is that Plastic provides version trees (yes, Team System miserably fail doing that, and the CVS and Subversion graphics are far from complete), and they are rendered in 3D... yes, you can rotate your tree, put it upside down and so on... Anyone implementing something similar for SVN?
The system also implements branch inheritance, true file renaming, merge tracking, repository level ACLs, and uses a SQL database as storage (Firebird, SQL Server or Postgres).
You can watch the screencast running on Mono/Linux at their blog: http://codicesoftware.blogspot.com/2007/02/plasti
Developers may be considering making it open source."
I have recently browsed through the latest SIP RFC looking for ways to be more NAT friendly for VoIP.
What I found is not very conclusive: The latest RFC indeed tries to push TCP as default transport for SIP (Yessss signalling links are making a come back) but the use of TCP connection is left to a lot of ambiguities.