Used to integrate Android apps with Facebook Platform
Powerful open source team chat application
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Use Apache echarts (incubating) in WeChat mini program
ChatSecure is a free and open source encrypted chat client for iOS
Open-source XMPP client for Android
Self-hosted chat app for small teams
Chat with your friends everywhere, whether you are in space or on eart