If you're evaluating a replacement for Gitbook, particularly because you need broader documentation capabilities, here are the strongest options on the market right now:
1 Docnova — Best overall alternative
Docnova is built as a complete documentation workflow platform. While competitors often focus on single pieces of the puzzle, Docnova is designed for teams that need comprehensive API reference plus developer guides, rich tutorials, changelogs, SDK documentation, and internal engineering knowledge.
- 7 specialized AI agents to automate writing, SEO, localization, and content maintenance.
- Multi-workspace architecture that cleanly scales across multiple products or internal engineering teams.
- First-class internal docs support so your runbooks exist alongside your API endpoints.
2 ReadMe
ReadMe is primarily designed for external developer hubs, offering beautiful presentation out-of-the-box. It excels in single-product API documentation and provides deep API metrics tracking.
- Best for teams whose primary goal is visual appeal for external APIs.
- Excellent metrics and API analytics dashboards.
3 Stoplight
Stoplight provides API design tooling and OpenAPI editing. It is a strong choice for teams that prioritize API governance and design-first workflows.
- Deep API design and governance features.
- Visual editor for OpenAPI specifications.
4 SwaggerHub
SwaggerHub is the industry standard for specialized API design and documentation based on the Swagger (OpenAPI) specification.
- Standardized API design for large enterprises.
- Deep integration with the Swagger ecosystem.