https://uwpx.org/
UWPX
A secure XMPP client app for all your UWP (Windows 10) devices.
https://apps.microsoft.com/detail/9n2s5v8hmvlm?hl=en-us&gl=US
UWPX - Free download and install on Windows | Microsoft Store
[This application is maintained any more] Chat with all your XMPP contacts. UWPX is a secure and Open Source XMPP app for all your UWP (Windows 10) devices....
download and installfreewindowsmicrosoftstore