The best options i’ve found for collaborating on conlangs or worldbuilding are Discord/Revolt/whatever other clone, and Cryptpad or Google Office Suite (spreadsheets might be better than text documents). For presenting the information in a non-collaborative way, just making a simple website isn’t very hard. Or a Lemmy community could work, once the language is fleshed out enough for light use. I wonder if anything like PolyGlot for collaborative work exists.

I didn’t know LibreOffice is collaborative. I’d be interested in trying something like this.

A while ago i worked out what phonemes are used in the 5 or so most widely spoken languages, and came up with /n m j w t k f s p/ and /a e i u/. If i remember right all of those are in at least 3.

A reverse abjad (dajba?) is a fun concept that just doesn’t work in most human languages. This would also fit well in !neography@lemmy.world. How many characters does this script have?

I think the most unusual things in Bantalu are the phoneme i’ve written as /Ⓒ͜ˡ/ (only terminal, usually something like [d̚ˡ]); and the particle /no/ that separates the object and subject in a VOS sentence.

I’m not currently learning any conlangs, but a few years ago i learned some Ta’agra. I got into that through the Elder Scrolls, and even translated a short book from English into it. It’s been a while but last i checked it did have a small community that did actually use the language to discuss things besides said language.