leetcode-alternative

Don't memorize ML. Understand it from first principles including Inference, Cuda, Deep Learning, Data Science and Reinforcement Learning

Open-source alternative to HackerRank, CodeSignal, HackerEarth, LeetCode, Codility & more. Self-hosted coding exam platform with live leaderboard, ICPC scoring, Monaco editor, and Judge0 code execution. NestJS + Vue 3 + PostgreSQL.

One coding challenge a day, graded in a sandbox for 10 languages

🎬 Interview prep that actually slaps — Swipe through 1000+ tech questions. System design, algorithms, coding challenges & more. Free & open source.

A web-based exam platform for programming courses. Students solve Python problems in a browser-based IDE with Monaco editor, and their code is graded automatically inside sandboxed Docker containers.

A bug fix repository that can test users coding skills as a replacement to Leetcode

AI-powered interview prep platform with Claude as your personal professor. Structured curriculum from machine foundations to system design OAs. Open source, MIT licensed.

Iwons: Type it. Test it. Own it. A calm coding practice adventure with 500 original challenges in JavaScript, TypeScript, Python, and Java.

AI prompt workflow system for generating data structures practice problems with Claude Code

Moduo brings together real-time video calls, collaborative coding, and chat - a complete, modular platform for engineers to practice, conduct, or experience technical interviews like never before.

The ultimate multiplayer coding platform. Challenge friends to real-time algorithm battles with live matchmaking, dynamic ELO rankings, and code execution.