Sharp.Xmpp is looking for a maintainer! Unfortunatelly I do not have currently the time needed to maintain the library. Luckily a small but vibrant community has evolved around Sharp.Xmpp. If you would like to be the project's maintainer please sent an email to pgstath@gmail.com. This should include issues, tickets and commits that you have done for Sharp.Xmpp or other similar project. Sharp.Xmpp is a multiplatform, Windows and Android, .NET XMPP client assembly.Sharp.Xmpp supports IM functionality & a variety of XMPP extensions, is simple and is extensively tested against Android Xamarin. It is a fork of the currently frozen excellent S22.Xmpp project. Sharp.Xmpp will be at the FOSSDEM 2016 Real time DevRoom!
It's doubtful that anything will be done if a new maintainer can't be found.
Refer to #49
Edit: For future visitors, an identical issue was opened on the original repository, and has received an official response. Refer to smiley22/S22.Xmpp#9
Will the library be adapted to UWP?