See also the tutorial on [ Using HDR Shop plugins ].
LightGen using clustering to generate a list of directional light sources that approximate the lighting from a lightprobe image. It outputs the lights in a veriety of formats, including Maya, Houdini, and Radiance.
An alternative algorithm for light probe sampling based on median-cut. The idea is relatively easy to understand and implement. One such implementation is available as part of Francesco Banterle's Banty's Toolkit beta 1.1.
This plugin implements a popular tone-mapping algorithm for converting HDR to LDR, implemented by Greg Zuro and made available through Greg Downing.
The HDR Shop plug-in architecture is designed to make it easy to write your own plug-in. Click on the tutorial above to learn how. If you or someone you know has written a plug-in that we should list here, please let us know.