xdotool lets you programatically (or manually) simulate keyboard input and mouse activity, move and resize windows, etc. It does this using X11’s XTEST extension and other Xlib functions.

Wow, TortoiseHG 2.0 is out. An almost complete rewrite, too many cool new features to list here:

Pashua is a tool for creating native Aqua dialog windows from programming languages that have none or only limited support for graphic user interfaces on Mac OS X. Currently, it supports AppleScript, Perl, PHP, Python, Rexx, Ruby, shell scripts and Tcl—and if your favourite language is not included in this list: writing the glue code for communicating with Pashua is pretty simple.