There's another page by crc that links to the latest snapshot, documentation and, IMO most importantly, a directory with retroforth examples:

http://forth.works/

http timeouts, but https and gopher both work for me:

https://forthworks.com/retro

gopher://forthworks.com/1/retro

The server limits the number of connections; this is likely the heaviest traffic it's seen; I've raised the limits a little to hopefully help with this.

So forthnoworksanymore. Lol.