DIY

Do you remember how long ago you saw it? Everything I'm aware of for furniture disappeared or went for-profit years ago.

Someone's already mentioned Opendesk, which mysteriously cut off access to files with a "we'll email everyone when they come back!". Spoilers, they did not come back, its been nearly 5 years. Instead they started selling furniture by request and partnering with fabrication services. There are some others that were similar, AtFab, fabsie, opendesign (which I think was a wiki, so maybe that was the one posted?)... but none are still active and the websites/links are dead or replaced by something different using the name. You can still find designs on github though, and some on Pintrest, of all places.

Here is one such repository of Opendesk's designs: https://github.com/timrolls/Opendesk . Go forth and fab freely.