Nexenta is a complete GNU-based operating system built on top of the OpenSolaris kernel and runtime. The Debian system is used for software distribution and packaging to glue the numerous pieces together. However, Nexenta is not currently part of the Debian Project, nor are its packages present in the Debian database. It includes Apache, MySQL, Perl, Python, PHP, Firefox, Evolution, a software update manager, Synaptic package manager, Gaim, Abiword, administration and development utilities, editors, graphics, GNOME, interpreters, libraries, and much more.
The Schily Source Package System (SPS) is a source-based packaging system that is developed for SchilliX (a OpenSolaris-based Unix distribution) but is highly portable and works on many operating systems. It "boots" from a single 10kb shell script and creates all needed binaries from scratch. In contrast to other similar systems, it is modular and reusable. It is based on the Schily Makefilesystem and smake.
fsrewrite is a utility for Solaris which allows non-privileged users to run programs in an environment where filesytem paths can be virtually remapped. Programs which read from or write to fixed paths can be transparently redirected elsewhere without the need to make any global changes.