Not open source

It’s so much better than sync. I might try Boost once it’s released, but connect just works really well

I have been using Thunder for a few weeks and it works very well. It has the best compact interface for me, close to the RedReader experience.

I’m an Infinity user too, though its name might change soon as the developer is discussing this in this post

Great app, very level headed developer and the way he asks for community users input makes you feel included.

Seconding Infinity

Sync followed by Jerboa, for me.

This is the FOSS community and neither Sync nor Boost are open source.