Fusio
Self-hosted API management and API gateway platform
2.1k stars 243 forks last commit first released Apache-2.0
Actively maintained
Last commit 16 Aug 2026.
Fusio is a self-hosted API management platform for building and operating APIs through a central gateway. It helps expose existing systems (like databases or microservices) as modern REST endpoints and provides tooling for documentation, consumers, and lifecycle management.
Key Features
- API gateway to route and mediate requests to internal services and backends
- API management backend UI for configuring routes, schemas, and access
- Developer portal capabilities for API consumers (documentation and onboarding)
- OpenAPI-based API documentation and specification generation
- SDK automation to generate client SDKs for multiple languages
- Usage analytics to observe API consumption and detect issues
- Extensible app system with installable web apps and integrations
Use Cases
- Expose legacy databases as managed REST APIs
- Provide a managed API gateway for microservices and internal systems
- Publish and operate partner or public APIs with a developer portal and client SDKs
Fusio is a strong fit for teams that want a self-managed, extensible API platform combining gateway, management UI, and developer-facing tooling in one product.
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