Smalltalk-80 implementation, runs on most Unix types and most places with a POSIX compliant library, well suited to scripting tasks and headless processing. Part of GNU Project of Free Software Foundation, FSF. [Open source, GPL]

A tool designed for generating program files that contain repetitive text with varied substitutions. This is especially valuable if there are several blocks of such text that must be kept synchronized. [Open Source, GPL]

A framework for testing other programs. Its purpose is to provide a single front end for all tests. Think of it as a custom library of Tcl procedures crafted to support writing a test harness. [GPL]

Portable Threads: portable POSIX/ANSI-C library for Unix gives non-preemptive priority-based scheduling for multithreading in programs. All threads run in same address space, each has its own program counter, run time stack, signal mask, errno variabl...

Freely available implementation of Kerberos 5. Includes system documentation and downloads.

Freeware - Generates makefile.in files from makefile.am input files, as part of the official GNU coding standards and build process. Requires GNU autoconf.

Freeware - A make program featuring pattern-matched viewpaths, parallel threads, multiple platforms, conditional directives, makefile regeneration, and an advanced Make description language.

A portable incident/bug report/help request-tracking system which runs on UNIX-like operating systems. It easily handles thousands of problem reports, has been in wide use since the early 90s, and can do most of its operations over e-mail. Several fro...

Arch Homepage. Contains download information and links.

The GNU Revision Control System, a popular free SCM tool on the UNIX platforms.