Sites and apps similar to LeetCode include Codecademy, which has a free version. Other options are exercism, Codewars, HackerRank and Project Euler. Code Learning Services like LeetCode are a crowded field, with more than 50 alternatives for Windows, Mac, Android, self-hosting and iPhone.
Explore free interactive coding courses in web development, data science, and various languages. Codecademy offers a fun, collaborative learning environment with community support, personalized paths, skill assessments, and more, covering both foundational and advanced concepts.
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Download and solve practice problems in over 30 different languages. For code newbies and experienced programmers.
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A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.
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Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.
Interactive platform for acquiring Web3 skills via Missions—micro-tasks covering crypto topics—rewarding users with tokens, NFTs, and merchandise from crypto brands. Earn Bits to boost winning odds, create Missions, join Guilds, and benefit from referrals.
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DevPrep is a voice interview simulator that actually talks back. The AI asks you technical questions out loud, listens to your spoken answer, evaluates it, and asks follow-up questions just like a real technical interviewer would.
United Kingdom
AceCoder is an invisible desktop app that instantly delivers solutions to any coding interview question.
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Four-Leaf is an AI career prep platform. Voice mock interviews, resume tailoring, cover letters, salary negotiation coaching, and application tracking, all organized per job application.
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Free AI-powered Chrome extension for LeetCode that provides intelligent coding hints, FAANG-style mock interviews, and auto-generated study notes with spaced repetition.
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octree.io is a platform where you can practice Leetcode-style problems in a room with other people. It serves as a supplement to Leetcode as you can invite your friends to practice problems together. It features a Game Room, Trivia Room and a Lobby which is a Slack-like chat...
