CheckIO!

CheckIO alternatives

  • CodeCombat

  • CodeCombat is an online game that teaches programming to learners as young as 6. Students write code in real programming languages.

    tags: free-to-play gamification learn-a-programming-language learn-coffeescript learn-javascript
  • hackerrank.com

  • A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.

    tags: challenge programming
  • CodeFights

  • Duel with friends and foes in head-to-head programming battles!

    tags: game-development programming
  • exercism

  • Are you a code newbie?

    tags: command-line learn-a-programming-language
  • CodinGame

  • CodinGame is a challenge-based training platform for programmers where you can play with the hottest programming topics.

    tags: challenge integrated-chat programming
  • Codewars

  • Achieve code mastery through challenge.Improve your skills by training with others on real code challenges

    tags: challenge coding kata languages programming
  • Ruby Warrior

  • This version of Ruby Warrior is a project by Bloc, a part-time online coding bootcamp for people who want to keep their current job, learn how to code, and become a full-time software developer.

    tags: learn-a-programming-language learn-ruby programming-game
  • edabit.com

  • Learn to code (for free) with interactive challenges. Gain XP, unlock achievements and climb the leaderboard. It's the fastest, easiest, most addictive way to learn.

    tags: achievements coding educational gamification graphics-design
  • Codeeval

  • CodeEval is platform for hosting coding challenges which has over 20,000+ competitive developers.

    tags: challenge programming
  • Vim Adventures

  • VIM Adventures is an online game based on VIM's keyboard shortcuts (commands, motions and operators). It's the "Zelda meets text editing" game. It's a puzzle game for practicing and memorizing VIM commands (good old VI is also covered, of course). It's an easy way to learn VIM without a steep learning curve.You play a blinking cursor appearing one day in a semi text based world of Textland inhabited by little people but ruled by bugs. You soon discover that your arrival was foretold by an old prophecy and that you're expected to restore order to the world (in case you didn't make it to level 2 yet...). »

    tags: educational-game vim-key-mapping
  • Code Arcade

  • Built by CodeFights, Code Arcade challenges players to solve programming tasks to complete game levels. It's a fun way to hone coding skills.

    tags: assessment challenge problem-solving programming-game
  • Geektastic

  • At Geektastic we help our client's thoroughly evaluate their future talent using our unique peer reviewed code challenge platform. We believe a candidate is worth more than a score and the only way to thoroughly understand how suitable they are to work in your team is to have a human look over their code. The platform allows clients to license code challenges from our portfolio or upload their own, they can also choose to have our on-demand team (of exceptionally talent software engineers) carry out the thorough review or perform it in-house. »

    tags: challenge code-editor coding development development-tool
  • Kattis

  • Kattis helps companies make safer recruitments and attract the best developers with its dynamic challenge platform.

    tags: challenge code-editor coding developers development
  • Screeps

  • Screeps is a massive multiplayer online real-time strategy game. Each player can create his or her own colony in a single persistent world shared by all the players. Such a colony can mine resources, build units, conquer territory. As you conquer more territory, your influence in the game world grows, as well as your abilities to expand your footprint. However, it requires a lot of effort on your part, since multiple players may aim at the same territory.

    tags: learn-javascript mmo-geeks programming-game strategy-game