Strophe.js is an XMPP library for JavaScript

Go XMPP Library (From Yasuhiro Matsumoto and based on the code from Russ Cox)

Cross-platform C++ XMPP client and server library

Native Go XMPP library

An XMPP library for use with Python 3.5+ asyncio.

An XMPP library written for .Net in C#.

Python 2/3 implementation of XMPP

📞 Giggle Jingle library for XMPP, implementation of XEP-0166.

XMPP network library

XMPP library for .NET/Xamarin/.NET Core

Lithosphere IoT Development Platform

An XMPP Framework written in Swift for Linux, macOS, tvOS and iOS inspired by obj-c library XMPPFramework

Asynchronous XMPP Library for PHP based on React

First Attemps to Implement Xmpp Library < Net 3.5 With C#

SCRAM and the World

Old .Net library for XMPP. Imported from Google Code.

SUB ZERO is a secure messaging client that inter-loops across divers networks and encryption frameworks for secure, untraceable communication.