CornerStone is a productivity chrome extension. it's a free extension , it has 9 active users since released its first version, it earns an average rating of 4.20 from 5 rated user, last update is 541 days ago.
A Chrome Extension which helps you foucs more by showing what you need to know Your Task Weather and a Quote Less distraction more work
You could download the latest version crx file or older version files and install it.
English.
100% user give 5-star rating. Read reviews of cornerstone
You could find more help information from cornerstone support page.
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More about manifest_file of cornerstone.
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excellent
Just loved it.Must try it ..
Cool extension....which helps in productivity