CheckiO
Online games for Python and JavaScript coders
About CheckiO
CheckiO’s audience
Our user base is varies from people learning to code, all the way up to those with a lot of experience in JavaScript and Python, looking to increase their knowledge of the languages.
We have a user base of 40K unique users per month, a mailing list of 10K subscribers, and a social network following of 3.5K.

History
The first version of the game was released on April 2010. The project went through TechStars Boston 2013 and got funded by VegasTechFund. Author of the Python language, Guido van Rossum also joined the project and periodically does code-reviews for users.
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Channels
Website
Facebook
Twitter
Profile owners
Alexander Liabakh
Sponsorship packages
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Past sponsors