There are 61 repositories under xmpp topic.
bridge between mattermost, IRC, gitter, xmpp, slack, discord, telegram, rocketchat, twitch, ssh-chat, zulip, whatsapp, keybase, matrix, microsoft teams, nextcloud, mumble, vk and more with REST API (mattermost not required!)
Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)
ChatSecure is a free and open source encrypted chat client for iOS that supports OTR and OMEMO encryption over XMPP.
Web-based XMPP/Jabber chat client written in JavaScript
An XMPP server licensed under the Open Source Apache License.
Tsung is a high-performance benchmark framework for various protocols including HTTP, XMPP, LDAP, etc.
A modular and portable open source XMPP client library written in Java for Android and Java (SE) VMs
Open-source XMPP client for Android
MongooseIM is Erlang Solutions' robust, scalable and efficient XMPP server, aimed at large installations. Specifically designed for enterprise purposes, it is fault-tolerant and can utilise the resources of multiple clustered machines.
Chat SDK Android - Open Source Mobile Messenger
Ncurses based XMPP client
【停止维护】基于Xmpp协议的即时通讯社交软件(客户端+服务端)Open source one last year to write their own Xmpp based on the agreement of the instant messaging social software (client + server)
Chat SDK iOS - Open Source Mobile Messenger
Cross-platform real-time collaboration client optimized for business and organizations.
Miranda NG: Next Generation of Miranda IM
Cross-platform C++ XMPP client and server library