Functionality: Codewars is a community of developers, who are called Code Warriors (or just warriors), that train on improving their development skills. Think of it like a coding dojo - where developers train with each other and help each other get better through practice. Read more on their wiki page: https://github.com/codewars/codewars.com/wiki/About-Codewars

System Requirements: Works on most web browsers

Activities Supported:

Delivery Methods Supported: Supports coding practice

Subject Applicability: Compute Science

Security Concerns: None

Pricing Model: Free, but requires an account to be created.