Wire open-sourced back-end services (github.com)

https://medium.com/wire-news/open-sourcing-wire-server-code-... if you're looking for the announcement

A chance to read some production Haskell -- maybe not a great good, but clearly a good.

Note that the license is AGPL.

Their choice of license is great; the real free software license which can keep its freedom and openness.