This was originally a commercial project. Definitely very well supported and very actively developed. The latest kernel release is 0.0.15 on 20th January 2k with source and binary snapshots of the current CVS code made every week. Beta 4.5.0 was released on 23 May 2000. There is also a active development community behind this.
Site is up to date.
This is a very mature project. Actively developed and supported. The kernel is being worked on. The only files released have been the vectra autobuild system. This is being actively developed.