The popularity rating of coveralls explained

Github Repository Rubygem
The highest rated repository is rails/rails with 30890 watchers and 12525 forks, resulting in a Github score of 99.99 The highest rated Rubygem is rake with 111305426 total downloads
These are the references for the score, marking the popularity of 100%
Now, the repository for coveralls over at lemurheavy/coveralls-ruby has got 67 watchers and 42 forks, resulting in a Github score of 0.30 Now, the gem coveralls has got 3582749 total downloads
Therefore, the relative popularity percentage can be calculated for coveralls
0.30 watchers & forks * 100% = 0.30%
99.99 top score
3582749 total downloads * 100% = 3.22%
111305426 top score
The average of those two values results in the score:


So, assuming everyone is using the most popular projects,
roughly one out of 50 Rubyists use coveralls

In order to continue, you must be signed in using your Github account.

If you're signing in using this account for the first time Github will ask for your permission to give access to your public user data to the Ruby Toolbox.

Although the Github Authorization page does not mention it, the request includes read-only access to your verified email address (user:email OAuth scope). This is neccessary so there's a way to notify you about comments, information about your accepted project edits and the like. You can review your notification settings on your account page once you're signed in.