Side by side
AsyncAPI Generator vs Scalar
Both stand on documentation generators. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxSelf-hosted
AsyncAPI Generator offers a free way to create API-related documentation and code from documents and templates, with scope shaped by the selected template. Its built-in templates carry a production-use caveat, so teams may need to create or extend templates.
Visit AsyncAPI Generator
Free plan Open source APILinuxMac+3
Scalar brings several API documentation and management tools together, with hosted and self-hosted options. Check the free plan's API and seat limits, and note that Agent Scalar credits do not carry forward between billing periods.
Visit ScalarThe facts
| AsyncAPI Generator | Scalar | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | Linux, Self-hosted | API, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Free or on request | Pro: $150 a month |
| Plans published | 1 | 4 |
| Maker | Not published | Not published |
| Website | asyncapi.com | scalar.com |
| On documentation generators | #5 of 37 | #1 of 37 |
AsyncAPI Generator: what it does well
- Generates documentation, code, diagrams, and other defined outputs.
- Supports custom templates and extensions to existing templates.
- Can scaffold API provider project structure and handler files.
- Offers npm and Docker installation options.
- Can be integrated into CI/CD pipelines.
What to know first
- Baked-in templates are experimental and limited in number.
- Built-in templates are not recommended for production use.
- Requires Node.js v18.12.0 or higher and npm v8.19.0 or higher.
Scalar: what it does well
- Interactive API references generated from OpenAPI documents
- Supports Markdown, MDX, and GitHub workflows
- API Client works offline
- Open-source tooling can run in a customer environment
What to know first
- Free plan is limited to three APIs
- Free plan includes one editor seat
- Agent Scalar credits reset and do not roll over
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