CodeWorld

Web · Linux · Self-hosted

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Freedom report

One barScore 5.6

Free tierNo free tier on record
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

CodeWorld is ranked #98 of 136 in coding playgrounds on Freedom251. It runs on Linux, Self-hosted, Web.

Compared on coding playgrounds

Free plan: Yes

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The record

Purpose: CodeWorld is an educational programming environment using Haskell to create geometric figures, animations, and interactive and multiplayer games.
Browser editor: The web environment provides a zero-setup editor and compiler, project sharing and cloud storage, and lets programs run in the browser.
Educational Haskell: The CodeWorld variant of Haskell and its libraries are designed to support mathematics instruction.
Standard Haskell: CodeWorld Haskell uses standard Haskell and can build programs for the website or compile them natively with codeworld-api and blank-canvas.
Blocks interface: CodeWorld Blocks provides a drag-and-drop programming interface for younger students, but the project says it has bugs and is not recommended for use.
No installation: The project says users can get started at code.world without downloading or installing anything.
Supported use: The project describes CodeWorld as stable and says it has been used in schools for years.
Account sign-in: The live site uses Google authentication, which lets CodeWorld offload account and credential management to Google.
Self-hosted authentication: Self-hosted installations can use local authentication with a SQLite database, BCrypt password hashes, and JWT-based authentication.
Unauthenticated use: Without authentication, users can write, build, and run code but cannot save or manage projects and folders.
Deployment: The project provides installation scripts for most Linux distributions, including Debian, Ubuntu, RedHat, and CentOS.
Support: Google provides no support for CodeWorld; the project directs questions to its discussion mailing list and student programming questions to a help forum.
Source license: The GitHub repository identifies the project license as Apache-2.0.

Where it ranks on Freedom251

Best Coding Playgrounds in 2026#98 of 136

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Sources

github.com/google/codeworld· checked 5 Oct 2026