I’ve found Zitadel to be the best open source Oauth2 provider. It also supports terraform for a fully IaC approach to declaring your users and their permissions.

Initial thoughts are that it seems impressive. They claim an 18x performance gain. I’ll probably play around with this a bit to check it out.

I wonder how much of this will be upstreamed

This is an interesting article. While the author isn’t necessarily claiming signal is bad, they certainly could be leaking everything or providing backdoors and we wouldn’t know…

I wonder what the downside of a decentralized chat service like matrix is in terms of UX?

You have to host your own instance (probably hard… ) or trust the person/org of the instance you are using which is kinda the same as using signal?

That you don’t have the best UX for sharing contacts?