Codewars
Focus: coding. Shares challenges and practice with Advent of Code. A web app, not a website. Freemium (Advent of Code: Free). Rated 4.6 (Advent of Code: 4.8).
Web AppFree planWeb
4.6Visit
Website
Advent of Code
Daily programming puzzles in December, with every past year still open.
Built with love by Shushant Lakhyani. Building bestproductivityresources.com
What is Advent of Code?
Advent of Code is an Advent calendar of small programming puzzles for a range of skill levels, solvable in any language. It is free, each puzzle has two parts and a story, and every past event stays online, so you can practise at any time of year.
Pros
- Fun, story-driven puzzles
- Any language you like
- Years of archives to practise on
Cons
- Later puzzles get tough
- New puzzles only arrive in December
Who should use Advent of Code
Developers who want fun coding practice or a December challenge with friends.
Who may not need it
People who are not learning to program.
Advent of Code alternatives
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Free alternatives to Advent of Code
Free resources that cover similar ground.
100 Exercises To Learn Rust
Focus: rust, course and exercises. Shares programming with Advent of Code. A course, not a website. Same 4.8 rating.
CourseFreeCross-Platform
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JavaScript.info
Focus: javascript, tutorial and web development. Shares programming with Advent of Code. A course, not a website. Same 4.8 rating.
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Eloquent JavaScript
Focus: javascript, ebook and exercises. Shares programming with Advent of Code. A book, not a website. Rated 4.7 (Advent of Code: 4.8).
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Lobsters
Focus: news, community and links. Shares programming with Advent of Code. A community, not a website. Rated 4.5 (Advent of Code: 4.8).
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freeCodeCamp
Focus: learn to code, web development and certifications. Also in Learning, like Advent of Code. Same 4.8 rating.
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Khan Academy
Focus: online courses, maths and science. Also in Learning, like Advent of Code. Adds iOS and Android. Same 4.8 rating.
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