Google Reader is one of the most popular online feed reader service, but only problem is that it does not come with a desktop version. PIMShell is a handy freeware tool which can be used as a desktop feed reader with build in support for importing feeds from Google Reader and other services. You can track or post comments in PIMShell. And your posted comments will be saved automatically and option to follow up the comments.
You have the option to import feeds from Google Reader or Feed demon or manually add feeds to the application. You can selectively import feeds from Google reader. PIMShell provides many ways to organize your articles effectively, apart from this it also provides desktop gadgets to track feeds.
PIMShell stores all of the articles into one data file, which can be carried everywhere. You can also set up password to protect the data. It even works like a browser where you can open Google Reader web inside the application.
Although there isnt a portable version, PIMShell is very handy tool for reading feeds on desktop.