I listed a few here: http://www.telescopeapp.org/blog/telescope-vs/ http://www.telescopeapp.org/blog/telescope-vs/ As far as I know Telescope is the most activ

I listed a few here: http://www.telescopeapp.org/blog/telescope-vs/ http://www.telescopeapp.org/blog/telescope-vs/ As far as I know Telescope is the most active open-source project of this kind though.