What are the best Judge0 CE alternatives? (2026)

The top alternative to Judge0 CE is Codeforces, followed by Hackerearth and JMESPath. We compared 9 Programming APIs you can use instead of Judge0 CE.

Looking for alternatives to

Judge0 CE

Online code execution system

Best Programming APIs Compare all Programming APIs

What Programming APIs can replace Judge0 CE?

9 APIs

Codeforces

Get access to Codeforces data

Hackerearth

For compiling and running code in several languages

JMESPath

Run JMESPath queries on JSON data for filtering, transforming, and extracting results

No AuthHTTPSCORS

KONTESTS

For upcoming and ongoing competitive coding contests

Let's Count

Create, retrieve, update, increment, and decrement counters identified by namespace and key

Mintlify

For programmatically generating documentation for code

apiKeyHTTPSCORS

PHPhub

PHP syntax checker

Pythonium

Validate Python code syntax

Softwium

Validate SQL queries

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Featured APIs appear first in alternatives pages, category rankings, and the homepage. Launch partner rate: $29/mo.