Achieve code mastery through challenge. Improve your skills by training with others on real code challenges

Kata In our dojo, ...

A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve rea ...

The programmer testing solution that matches your job descriptions and helps you hire great developers faster.

Devskiller is a developer screening and online interview platform powered by RealLifeTesting™ methodology. The tool allows you ...

CodeSignal is the leading provider of assessments for technical recruiting. As the creator of the Predictive Coding Score, Cod ...