Hands-on coding exercises, challenges, and real-world practice platforms.
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Free Resources (14)
- AtCoder Free
- Japanese competitive programming contests and practice problems.
- CodeChef Free
- Competitive programming platform with monthly contests and practice problems.
- Codeforces Free
- Competitive programming contests with real-time rating system.
- Codewars Free
- Community-driven coding challenges (katas) in multiple programming languages.
- CodinGame Free
- Gamified coding challenges and programming puzzles with multiplayer.
- CodingBat Free
- Free practice problems for Java and Python with instant testing.
- Exercism Free
- Free code mentorship and practice in 70+ programming languages with mentor feedback.
- Exercism - Mentoring Free
- Free one-on-one mentorship for code improvement in 70+ languages.
- Interviewing.io Free
- Free anonymous technical interview practice with real engineers.
- Kickstart Free
- Free coding interview practice with Google engineers.
- Pramp Free
- Free peer-to-peer mock interviews for technical and behavioral questions.
- Sanfoundry Free
- Thousands of MCQs, programming questions, and technical interview resources.
- Sphere Online Judge Free
- Large collection of algorithmic problems with community solutions.
- TopCoder Free
- Competitive programming arena and software development challenges.