Top 4 C++ XMPP Projects

qxmpp

2 388 9.5 C++

Cross-platform C++ XMPP client and server library

Project mention: QXmpp 1.5.5 | /r/xmpp | 2023-05-01

biboumi

2 72 10.0 C++

IRC gateway for XMPP

Project mention: IRC Is the Only Viable Chat Protocol | news.ycombinator.com | 2023-07-29

IRC is great! I access through the excellent biboumi gateway, which offers bouncer-like functionality and let me choose between various clients. There are open instances available for everyone to use, although I couldn't give a list of them since I self-host. I like that it's very lightweight, making it a reasonable permacomputing approach to group chats.
I wouldn't go as far as saying it's the only viable chat protocol, if you follow the link below you'll guess what I have in mind saying that. (it starts with an X and ends with two Ps)
https://biboumi.louiz.org/

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
plugins

3 56 5.5 C++

Officially supported Psi plugins (by psi-im)
harbour-shmoose

1 34 0.0 C++

XMPP Client for Sailfish OS

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).