In Sleator, D. and Temperley, D. "Parsing English with a Link Grammar" (1991), the authors defined a new formal grammatical system called a "link grammar". A sequence of words is in the language of a link grammar if there is a way to draw "links" between words in such a way that the local requirements of each word are satisfied, the links do not cross, and the words form a connected graph. The authors encoded English grammar into such a system, and wrote this program to parse English using this grammar.

prctl is a tool to query and modify process behavior. Supported process behavior is handling of unaligned memory access, handling of floating point software assist faults and machine check memory corruption kill policy. Some of this functionality is supported by the kernel only on a subset of architectures.

Libdisasm is a disassembler for Intel x86-compatible object code. It compiles as a shared and static library on Linux, FreeBSD, and Win32 platforms. The core disassembly engine is contained in files with the prefix "i386", and is shared with the x86 ARCH extension of the bastard disassembler.