Top 7 Open-Source Alternatives to Codier

Product categories

CSS Games CSS Tools Coding Design Tools Education Exam Preparation Learn To Code Online Courses Online Education Online Learning Programming

Summary

The top open-source alternatives to Codier are LeetCode, Exercism.io, and Codewars. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

LeetCode Landing Page
1

LeetCode

Practice and level up your development skills and prepare for technical interviews.
Pricing:
- Open Source
#Online Education #Online Learning #Online Courses 515 social mentions
Exercism.io Landing Page
2

Exercism.io

Download and solve practice problems in over 30 different languages.
Pricing:
- Open Source
#Online Learning #Online Education #Online Courses 298 social mentions
Codewars Landing Page
3

Codewars

Achieve code mastery through challenge.
Pricing:
- Open Source
#Online Learning #Online Education #Online Courses 160 social mentions
Flexbox Froggy Landing Page
4

Flexbox Froggy

A game for learning CSS flexbox
Pricing:
- Open Source
#CSS Tools #Online Education #Design Tools 252 social mentions
Project Euler Landing Page
5

Project Euler

Project Euler is a series of challenging mathematical/computer programming problems that will...
Pricing:
- Open Source
#Online Learning #Online Education #Online Courses 405 social mentions
DMOJ Landing Page
6

DMOJ

The DMOJ is a modern contest platform and archive of programming problems.
Pricing:
- Open Source
#Online Education #Online Learning #Programming 11 social mentions
Battlesnake Landing Page
7

Battlesnake

Battlesnake is a multi-player programming game played by developers all over the world.
Pricing:
- Open Source
#Online Learning #Online Education #Online Courses 16 social mentions