Patchutils contains a collection of tools for manipulating patch files:
interdiff, combinediff, filterdiff, fixcvsdiff, rediff, lsdiff, and
splitdiff. You can use interdiff to create an incremental patch between
two patches that are against a common source tree. Combinediff can be
used for creating a cumulative diff from two incremental patches.
Filterdiff is for extracting or excluding patches from a patch set
based on modified files matching shell wildcards. Lsdiff lists modified
files in a patch. Rediff corrects hand-edited patches.

RCS, the Revision Control System, manages multiple revisions of files.
RCS can store, retrieve, log, identify, and merge revisions. It is
useful for files that are frequently revised, for example: programs,
documentation, graphics, and papers.

Utility to set some display properties during server runtime.

With 'testgart', you can check if your machine has agpgart support.

transset manipulates the _NET_WM_WINDOW_OPACITY property to make
windows transparent.

Uisp is a tool for avr microcontrollers and drives many hardware
in-system programmers. Uisp allows you to programm your microcontroller
through the parallel port of your computer.

The Multitouch X Driver driver uses the kernel MT protocol to bring multi-touch gestures to the Linux desktop.

Some useful tools for the X Window System.