Just use Status: https://status.im/private-messenger/
Mozilla Public License - E2E Encryption - P2P Messaging - Active community & git repo - Integrated Ethereum wallet for Web3 access
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Mozilla Public License - E2E Encryption - P2P Messaging - Active community & git repo - Integrated Ethereum wallet for Web3 access
As for dev support: Status has teams of full-time devs working on various projects related to the mobile[1] and desktop[2] (beta) apps, as well projects that are related to the larger Ethereum ecosystem, e.g. nimbus-eth2[3]. Our teams aren't particularly large, but are working steadily to squash bugs and add/improve features. We also have teams dedicated to UX and design.
[1] https://github.com/status-im/status-react