It seems like only one of those Tox clients is still being somewhat actively maintained. uTox hasn't been updated in a couple years. qTox in about a year. Toxyg

It seems like only one of those Tox clients is still being somewhat actively maintained. uTox hasn't been updated in a couple years. qTox in about a year. Toxygen 3 years. aTox still has commits though over a year since a release. Toxic had commits and a release a few months ago.