OpenCodeReview combines deterministic checks and language model agents for code review with line-level comments.
Refraction
Refraction uses AI to refactor code, generate documentation, and create unit tests from code samples.

About Refraction
Refraction is a web tool for developers that refactors code and generates documentation and unit tests from pasted code samples. Users paste a block of code, choose a language or framework, and run generation. It supports 56 listed languages and generation is subject to an 8000-token limit.
Key features
- Refactor pasted code by selected language or framework
- Generate documentation from code samples
- Create unit tests from code samples
- Generate output in 56 listed programming languages
- Select language or framework before generating
- Supports 56 programming languages
- Handles refactoring, documentation, and unit test generation in one workflow
- Uses paste-code and language selection for input
- Generation limited to 8000 tokens
Refraction at a glance
- Website
- refraction.dev
- Type
- Online tool
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Good for
- Developers
- Last checked
- Oct 5, 2026 · Online when checked
- Listed
- Oct 5, 2026
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