I'm aware of all the major sweet tape echoes (and many of the minor ones too) like...
- Space Echo RE 150,200, 201, 301, 501, 555
- Echoplex EP-1, 2, 3, 4, Sireko, Groupmaster
- Fulltone
- Korg Echo
- Evan's Echo
- The Plex
- Binson Echorec (not a tape echo but still...)
- Meazzi...