OpenSSH 5.5 brings minor improvements
Version 5.5/5.5p1 of open source SSH (Secure Shell) implementation OpenSSH is primarily a bug fix version and improves logging of authentication using client certificates. The source code should now compile on platforms which do not support the dlopen function for loading dynamic libraries.
More details about the release can be found in the release notes. OpenSSH is available under a BSD licence and is funded through donations. As the projects home page points out, despite being extensively used by a number of major companies none of them have made a donation.