You're rambling.

Basecamp alternative: http://lessprojects.com/ - Status: Not shut down.

Basecamp alternative: https://www.hoisthq.com/ - Status: Private beta

Free, open-source Campfire alternative: https://echowaves.com/ - Status: Not shut down.

And these are just the ones I know about (OK, I had to Google for a second to find EchoWaves).

Final nail in the coffin: If 37S was "competing" by shutting down competitors, why are they innovating their products at the pace they are? The Campfire of today doesn't look like the Campfire HuddleChat ripped off.