The Free&Alter Software Distribution offers a Free Software distribution downloadable for Solaris, HPUX, and IRIX. It contains 100 of the most popular Free Software applications used in research centers, like the GNU utilities, XEmacs, DDD, the GIMP, and Scilab. Unlike other distributions, it can be installed in the directory of your choice. The installation takes place in an intuitive GUI, and environment variables are easily managed by TkChoice.
freeBIOS is designed to be a generic open source firmware for use in any PC-like system. Firmware initializes a computer and its peripherals, and then transfers control to the operating system. Firmware also provides various interfaces which operating systems may call to accomplish certain system-wide tasks like power management or PCI bus scanning.
Briefly, FreeBSD is a UNIX operating system based on U.C. Berkeley's 4.4BSD-lite release for the i386 platform (and recently the alpha platform). It is also based indirectly on William Jolitz's port of U.C. Berkeley's Net/2 to the i386, known as 386BSD, though very little of the 386BSD code remains. A fuller description of what FreeBSD is and how it can work for you may be found on the FreeBSD home page.
FreeNOS is an experimental microkernel operating system for learning purposes. The system is very experimental, yet it currently supports virtual memory, simple task scheduling, and interprocess communication (IPC). It currently contains support for a few devices, including VGA, keyboard, i8250 serial, ATA drives, and PCI controllers. FreeNOS has an experimental implementation of several filesystems, such as the virtual file system, procfs, tmpfs, linnfs, and ext2fs. Current application libraries include libposix, libc, libteken (terminal emulation), and libexec (executable formats). All source code has been documented with Doxygen tags. It has been tested on recent versions of Qemu, VMWare, VirtualBox, Bochs, and bare hardware.
Frugalware is a general-purpose Linux distribution designed for intermediate users who are not afraid of text mode. "The Frugalware Philosophy" is about simplicity, multimedia, and design. The authors try to make Frugalware as simple as possible while not forgetting to keep it comfortable. Frugalware uses Judd Vinet's pacman package manager.