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

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

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.

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