Recommended executable crunchers as of 2021-09-10:

Cranker 0.66 -> http://neoscientists.org/~bifat/binarydistillery/cranker/
RNC ProPack 2.08 -> http://aminet.net/package/util/pack/RNC_ProPack

Valued competitors:
StoneCracker 4.10.3 -> http://aminet.net/package/util/pack/Stc4103
V5 might see the light in the near future!

Shrinkler, for small demos -> http://crinkler.net/shrinkler46.zip
Lib dependency may also be gone in the next version!

Many more crunchers are available if you handle decompression via decompression source!
//Photon