The Heirloom Project provides standard Unix utilities.
ttyrpld is a multi-OS kernel-level TTY keylogger and screenlogger with (a)synchronous replay support. It runs on Linux, Solaris, FreeBSD, NetBSD and OpenBSD.
Open Source Application Server Appliance based on Open Source GlassFish
ZoneBSD is a project to research the feasability of adapting the FreeBSD kernel to run within a Solaris 10 Zone container. This will allow a virtualized FreeBSD to run on top of a parent Solaris 10 kernel through the Zones virtualization mechanism.