Below you will find a list of some of the scripts I've written for Blender 2.4.
More information on how to run scripts in Blender 2.4 can be found on this page.
A note about the videos on this page: they are very small. You can watch bigger versions on vimeo or on the main page of the script it belongs to.

Warning: these are scripts for Blender 2.4 and won't work in Blender 2.5 or later

Index Visualizer

Display the indices of vertices, edges and faces in the 3d-view
Latest version: 1.1
<more information>

<direct download>

LoopTools

Various tools to aid modelling that involves loops.
Latest version: 2.5
<more information>

<direct download>

Onion Skinning

Create a ghost image of an animation at user-defined keyframes.
Latest version: 3
<more information>

<direct download>