Caffeinated is a beautiful Google Reader client that seamlessly syncs with your Google Reader account. Caffeinated supports sending to your favourite social networks, such as Facebook and Twitter and also bookmarking / read it later services such as Instapaper and Read It Later.

Download link 1:

Download link 2:

Other features:

Plugin architecture for developers

Find and subscribe to feeds

Basic “resume”, start off where you left off (also works on OS X 10.6 Snow Leopard)

Basic click for flash

Readability mode to see the full article

Fully customisable shortcuts

Subscription organisation

…and much more!