GitHub +1 is a developer tools chrome extension. it's a free extension , it has 46 active users since released its first version, it earns an average rating of 2.50 from 4 rated user, last update is 3564 days ago.
Know this: button looks MUCH better than on the screenshot. GitHub has issues. Some are worse than others. But you can't really tell. Except now you can! Simply install this awesome extension and go ruthlessly upvote issues (and pull requests) and make the world a better place. Button style shamelessly taken from http://code.divshot.com/geo-bootstrap/
You could download the latest version crx file or older version files and install it.
English.
50% user give 5-star rating, 50% user give 3-star rating. Read reviews of github +1
You could find more help information from github +1 support page.
You could send emails to publisher, or check publisher's website.
You could click to report abuse of github +1.
I thought this would +1 the page with Google+, but instead, it posts a comment on the issue that says "+1". I don't like this method, because it's spammy.
What a fantastic little extension!