Open-source AI gateway. Self-hosted LLM gateway with OpenAI-, Claude- and Gemini-compatible APIs, model routing, access control, usage tracking and cost accounting.
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API Management GitHub Repositories (2026) · Open Source Tools
Discover the best API Management open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
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13 matching projects · updated Nov 13, 2026
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The Cloud-Native API Gateway and AI Gateway
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Connect, secure, control, and observe services.
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Self-Hosted API Management for Builders
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Welcome to the WSO2 API Manager source code! For info on working with the WSO2 API Manager repository and contributing code, click the link below.
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PHP implementation of the GraphQL specification based on the reference implementation in JavaScript
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open source Kubernetes-native API gateway for microservices built on the Envoy Proxy
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Apache Syncope
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Gravitee.io - OpenSource API Management
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Developer portal provided by the Azure API Management service.
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High-performance API and AI Gateway
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Open source API management platform
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Open-source OpenAPI mock server with cloud hosting and local modes for development, testing, and CI. Generates realistic API responses from specs with latency simulation, error injection, proxy fallback, and request validation. Validated against 2,200+ real-world OpenAPI specs.
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