Codewars

Codewars is an online platform for developers to improve their coding skills through interactive challenges called 'kata'. Users can practice in over 55 programming languages, earn ranks, and compare solutions with a large community. It offers a free tier and a premium 'Red' subscription for additional features.

Codewars is a strong match for the 'Frontend Masters Learning Platform' concept. It offers a platform for improving coding skills through 'kata' (coding exercises) which are essentially curated learning paths. While not explicitly 'expert-led courses' in the traditional sense, the kata are community-crafted and reviewed, implying a level of expertise. It has progress tracking through ranks and honor, and offers a 'Red' subscription for enhanced features, which acts as an all-access subscription for its specific content. It also mentions team plans and certifications. The primary difference is that Codewars focuses on coding challenges and practice rather than in-depth video courses, though it does provide a learning environment.