One is made for the Mac, the other the PC – both RSS readers. When coupled with the other service run by their company, 
NewsGator, you can have both read the same RSS feeds and also synchronise what articles you’ve read from your subscribed feeds, all with the comfort of a zero cost! I must say in the initial tests, I’m well impressed. If you have to swap between a Mac and a PC and you use RSS (let’s see, RSS reading IT people must be what, about 90% of the population?), give this tandem/trio a try. You’ll be most impressed.
