The Plugin Site

Great Photoshop plugins website with tons of useful informations and resources. Krusty's FX were coded using Filter Factory, you will find on this site many free Filter Factory plugins and the Filter Factory Programming Guide .

Digital Camera World

52 of the best free Photoshop plugins for photographers.

DIY Photography

Extensive list of free and commercial plugins (over 100).

Plugin Bridge

Run 32bits plugins in 64bits versions of Photoshop. (commercial)

LaunchBox

Run 32bits plugins in 64bits versions of Photoshop. (commercial)

Adobe Photoshop SDK

Adobe Photoshop SDK for Windows and Macintosh C++ plugins development.

Filter Factory Programming Guide

Krusty's FX were coded using Filter Factory, you will find on this site all the information needed to develop your own Filter Factory plugins.