Found this nice collections of compactors, crunchers, compressors, packers, etc... by the Tricky Freak 1571 of the group Wierd Science 2662.  Included in this disk is ECA v1.3, ECA v4/H, ECA v4/S, ECA v3.24, CFB Cruncher v1, CFB Cruncher v2, Optimizer v1.1, Optimizer v1.2, 64'er Packer v1, 64'er Packer v2, 64'er +Ent.Iser, Speedi Packer v1, Speedi Packer v2, Lame (BASIC) Compactor, Cracken Compressor, F.A.C. Compressor, Compacker v2.0, Compacker v2.1, Compacker v3.0, Matcham's Speedpacker, TWC Intro Packer, TMC Flask Packer, 2703 Compactor, Ultracomp v3.0, Turbocruncher, Cruncher II, Cruncher III Compactor 3+, Packer 820, TBC Compressor, Prg. Cruncher and Code Compressor.

Here's an interesting CSDB link about the user of compressors/compactors in the early days, and here's another link about using Exomizer (a modern utility).  You may also find interesting this article by Richard of TND about the difference between packers and crunchers.