OMEMO has replaced OTR. Conversations.im supports OMEMO.

Conversations.im and its developer produce great things for the community:

* Conversations.im itself

* https://snikket.org/open-source/ and https://quicksy.im/ are built on the conversations app

* Hosted XMPP: https://account.conversations.im/

* Compliance testing: https://compliance.conversations.im/