Alienhelpdesk is a well known site that houses numerous Blender scripts, including Caliper and BRayBaker, though you have to see the comprehensive list to really appreciate the many useful scripts you can find in one place.
macouno writes:
I took some time today to go through all the scripts at the alienhelpdesk website to make sure they all work in blender 2.42
Updated and released have been
- BrayBaker 3.4 (only made to function in 2.42)
- BlenderCaliper 1.2 (+ additional functions)
- MaBaker 0.3 (+ additional wind function)
- Swarm 0.2 (still experimental + updated the example .blend)
Please let me know if there are any issues with functionality [on the BA thread].
All the other alienhelpdesk scripts have been tested and should run fine.
Whether you're new to Blender or a seasoned veteran, alienhelpdesk is a resource you should not be without!