Codier is described as 'Explore and attempt front-end coding challenges' and is an website in the education & reference category. There are more than 25 alternatives to Codier, not only websites but also apps for a variety of platforms, including Windows, SaaS, Mac and iPhone apps. The best Codier alternative is HackerRank. It's not free, so if you're looking for a free alternative, you could try HackerRank or LeetCode. Other great sites and apps similar to Codier are Project Euler, CheckIO, Edabit and Coderbyte.
A fun social platform for hackers to solve interesting puzzles, build quick hacks, code game bots and collaborate to solve real-world challenges.
HackerRank is the most popular Web-based alternative to Codier.
HackerRank is the most popular free alternative to Codier.
LeetCode is a platform for learning and improving coding skills with the goal of being fully prepared for programming interviews. Choose problems to solve from categories such as System Design, Algorithms and Database, join code contests and engage in mock interviews.
Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.
CheckIO is the most popular Open Source alternative to Codier.
When learning to code, most people get stuck on the "bridge" between memorizing syntax and understanding the logic that makes it all work. We believe the most effective way to learn a programming language is to break the process into three phases:
Edabit is the most popular commercial alternative to Codier.
Coderbyte is a place built for anyone to practice and perfect their programming skills. Challenges are added almost every day so you can work on applying your algorithmic thought process on any problem you want at anytime.
CodeSignal is the leading provider of assessments for technical hires. As the creator of the Predictive Coding Score, a measure of a candidates coding skills, CodeSignal provides HR teams with Certified Assessments, Custom Tests, and Live Interviews.
Learn to code JavaScript by playing game. This game claims to be the world’s first MMO strategy sandbox game for programmers.
Screeps is the most popular Windows, Mac & Linux alternative to Codier.
Sphere Online Judge created for the coders' community to train, to learn and to make progress. With thousands of programming problems and an international group of users Spoj is one of the best programmers' communities and online judges in the world.
Topcoder provides members opportunities to demonstrate their expertise, improve their skills, and win cash, while helping real world organizations solve real world problems.
CodeChef is a not-for-profit educational initiative by Directi, an Indian software company. It is a global programming community that fosters learning and friendly competition, built on top of the world’s largest competitive programming platform.
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