Best Coding Challenge Platforms in 2026
Updated
In short: CodeSignal is ranked #1 of 30 as of 4 October 2026, ahead of Edabit and Eolymp. The best-ranked option with a free plan is Edabit. The lowest first paid tier on this page is CodeSignal at $24.99/mo.
Whether you’re practicing a language or looking for candidate assessments, coding challenge platforms vary in their focus and available resources. GeeksforGeeks Practice, Codeforces, and AtCoder lead the ranking. Compare primary use, supported languages, and problem library size, then consider whether solution explanations or custom challenges matter for your practice. For hiring workflows, check the company assessment capabilities. Free-plan availability and paid starting prices can help you weigh access and cost alongside those features. The ranked order gives you a starting point for exploring the options; the listed comparison criteria can help you decide which platform best fits the coding work you have in mind.
30 coding challenge platforms ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
#1 CodeSignal Top pick · 7.1 Free plan · $24.99/mo
#2 Edabit Runner-up · 6.9 Free plan · Free
#3 Eolymp Also great · 6.9 Free plan · Free- Free plan AndroidapiiOSWeb
- Free plan
- Yes
- Paid from
- 79 /mo
RecognisedDocumentedFree planPlatforms$24.99/mofirst paid tier About CodeSignalVisit site - Free plan Web
- Free plan
- Yes
- Primary use
- practice
- Languages supported
- C#, C++, Java, JavaScript, PHP, Python, Ruby, Swift
- Problem library size
- 17,000 problems
- Solution explanations
- Yes
RecognisedDocumentedFree planPlatforms - Free planFree trial apiWeb
- Free plan
- No
- Primary use
- practice
- Languages supported
- C++, Python, Java, Go, Pascal, Haskell, Lisp, Assembly, PHP, JavaScript, C#
- Solution explanations
- Yes
RecognisedDocumentedFree planPlatforms - Free plan LinuxmacOSWebWindows
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Web
- Free plan
- Yes
- Primary use
- contests
- Languages supported
- C, C++, C#, Java, Python, Rust, Ruby, Go, Kotlin, Swift, JavaScript, TypeScript, PHP, Perl, Lua, Scala, Haskell, OCaml, Nim, Pascal, R, SQL, Prolog, PowerShell, Bash, Fortran, COBOL, Julia, Dart, Elixir, Erlang, F#, D, Crystal, Clojure, Common Lisp, Scheme, Visual Basic, Lean, LLVM IR
- Problem library size
- 5,000 problems
- Solution explanations
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiWeb
- Free plan
- Yes
- Primary use
- practice
- Languages supported
- Python, Ruby, C#, Scala, Lua, JavaScript, C, Kotlin, C++, Haskell, OCaml, Pascal, Java, Dart, R, PHP, Swift, Clojure, Rust, Elixir, SQL
RecognisedDocumentedFree planPlatforms - Free plan apiWeb
- Free plan
- Yes
- Primary use
- contests
- Languages supported
- C, C++, C#, D, Delphi, F#, Free Pascal, Go, Haskell, Java, JavaScript, Kotlin, Node.js, OCaml, PascalABC.NET, Perl, PHP, PyPy, Python, Ruby, Rust, Scala
- Solution explanations
- Yes
RecognisedDocumentedFree planPlatforms - Free plan Web
- Free plan
- Yes
- Primary use
- practice
- Languages supported
- Java, Python
- Solution explanations
- Yes
RecognisedDocumentedFree planPlatforms - Free plan apiWeb
- Free plan
- Yes
- Primary use
- contests
- Languages supported
- Bash, C, C#, C++, Dart, Delphi, D, Free Basic, Free Pascal, Go, Haskell, Java, JavaScript, Kotlin, Kumir, Lua, OCaml, PascalABC.NET, Perl, PHP, Python, R, Ruby, Rust, Scala, Swift, TypeScript
- Problem library size
- 80,000 problems
RecognisedDocumentedFree planPlatforms - AndroidiOSWeb
- Free plan
- Yes
- Primary use
- practice
- Languages supported
- C, C++, Java, Python, JavaScript, C#
- Problem library size
- 2,518 problems
- Solution explanations
- Yes
RecognisedDocumentedFree planPlatforms - Free trial apimacOSWebWindows
- Free plan
- No
- Paid from
- 165 /mo
RecognisedDocumentedFree planPlatforms$165/mofirst paid tier About HackerRankVisit site - Free trial apiextensionWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms$99/mofirst paid tier About CoderbyteVisit site - Free trial apiWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms - AndroidiOSWeb
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Free trial apiWeb
- Free plan
- No
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Paid from
- 4.9 /mo
- Primary use
- practice
- Languages supported
- HTML, CSS
- Problem library size
- 1,100 problems
RecognisedDocumentedFree planPlatforms - Web
- Primary use
- interviews
- Languages supported
- JavaScript, TypeScript, Python, Swift, Kotlin, C++, Java, C#, Go
- Problem library size
- 160 problems
- Solution explanations
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- No
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Primary use
- practice
- Languages supported
- SQL Server, Oracle, MySQL, DB2, Mimer, PostgreSQL, SQLite, Access
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - WebLinux
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - Web
- Primary use
- contests
- Languages supported
- C++, C, Python, PyPy, Java, JavaScript, TypeScript, Go, Rust, Ruby, Lua, Kotlin, Haskell
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
- Paid from
- 4.99 /mo
RecognisedDocumentedFree planPlatforms - Web
- Free plan
- Yes
RecognisedDocumentedFree planPlatforms - WebRecognisedDocumentedFree planPlatforms
Is your app on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which coding challenge platform is ranked first on Everything Xiaomi?
CodeSignal is ranked #1 of 30 with a score of 7.1. Edabit is second and Eolymp third.
How many of these have a free plan?
9 of the 25 on this page publish a free plan on their own pricing pages.
Which is the cheapest paid option?
On this page, CodeSignal has the lowest first paid tier we found: $24.99/mo.
How is this list ranked?
Ranked on what each maker publishes: documentation depth, a free tier and the platforms it runs on. Paid placements never change a rank.