Hey wim! Coincidentally yesterday I was reading an old thread[0] and saw your post about thymer which got me curious. When I searched on HN for thymer I got a show hn in 2009[1] and it seems Thymer is in private beta for the past 15 years?
Hah well there is definitely some scope/vision creep involved, and it all took a bit longer than planned. Not 15 years though! (that's about the very first app we ever made, which we only keep online for existing users). We've been working on this new project as a team of 2 for almost three years now. We really wanted to get it right so we spent a lot of time building the editor/IDE completely from scratch, as well as all the other stuff like the syncing layer (which is how I became interested in the topic of CRDTs and such).