This may not be the perfect space for this question, but it's probably close enough. Evan Henshaw-Plath apparently has a new project called planetary.social that uses a protocol called Scuttlebutt (which I've never heard of), which seems to be "open", but MIT licensed. I've always appreciated Evan's politics (he was a key contributor to Indymedia and Riseup.net, if I remember correctly), but I'm not quite sure... Source: about 2 years ago

Rooms are new and only manyverse supports them so far. The new rooms 2.0 is based on go-ssb and there is also a go-ssb pub. With planetary we use go-ssb in the ios app but the older js pubs in the cloud. Source: over 2 years ago

Planetary.social | Go / Swift Devs | Full-Time | Remote | $ Market | https://planetary.social Help us build out secure scuttlebutt as an open protocol for decentralized social media that puts users in control. Work on open source to solve important problems in the world. Planetary is working with twitter's bluesky to build a better future. We're looking dev's who want to work on our decentralized go lang... - Source: Hacker News / over 2 years ago

Manyverse is a great app, one of several compatible ones which use the secure scuttlebutt protocol. For ios another open source one is https://planetary.social/ which I wrote. - Source: Hacker News / over 2 years ago

I'm really into movies and tv series that recently to keep track and rate them I've found this really well done app called MUST. I think its pretty famous right now, but if you don't know it I hardly recommend it to use. https://mustapp.com. Source: over 2 years ago

Also check out mustapp, I doubt they have direct relationship with these services. Source: almost 3 years ago