GitBook is a tool for building beautiful books using Git and Markdown. It can generate your book into multiple formats:
Cost / License
- Freemium
- Proprietary (Apache-2.0)
Application typeApplication types
Platforms
- Online
United States
Hello API AlternativesDocumentation Generators and other similar apps like Hello API
Sites and apps similar to Hello API include GitBook, which has a free version. Other options are Slate API Docs Generator, Redocly, Apiary and ReadMe. In total there are nine Documentation Generators like Hello API for self-hosting, Mac and Linux.
Alternatives list
- 107 GitBook alternatives
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Linux
- Self-Hosted
- United States
Cost / License
- Paid
- Proprietary
Platforms
- Online
- United States
ReadMe is a completely customizable and collaborative place for dynamic API and/or product documentation. Users can play around with the API right in the docs, automatically generated from a Swagger / OAS file. It also works as a knowledge base platform.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Online
- United States
Bump.sh helps you build a branded single source of truth, cataloging all your APIs. We’ve created the reference point for developers and product managers consuming and building APIs, no matter which technology they rely on (OpenAPI, AsyncAPI, and more soon).
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Software as a Service (SaaS)
+2
21 OpenAPI Editor and Visualizer alternativesFree browser-based OpenAPI editor from Postman. Design or import a Swagger 2.0, OpenAPI 3.0, or OpenAPI 3.1 spec (YAML or JSON) and see live documentation with inline validation as you type. No signup, no install. Part of Postman's suite of free developer tools at postman.
Cost / License
- Free
- Proprietary
Platforms
- Online
- United States
The API documentation tool that creates interactive REST API documentation and developer portals in minutes. Auto-generate from OpenAPI & Swagger specs—no coding required.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online
- Global
Generate typed SDKs from OpenAPI, AsyncAPI, GraphQL, gRPC, and OpenRPC—plus interactive docs and MCP servers enriched with custom Markdown.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Online
- Software as a Service (SaaS)
+3
