Best Open‑Source API Management Software for Startups

Curated list of the top open‑source API management platforms ideal for startups seeking scalable, cost‑effective solutions.

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#2 Kong

High‑performance, cloud‑native API gateway built on NGINX, offering plugins for authentication, rate‑limiting, logging, and analytics.

#3 Tyk

Lightweight, open‑source API gateway and management platform with a developer portal, analytics, and middleware support.

Comprehensive API management suite providing publishing, lifecycle management, security, throttling, and analytics.

Modular API platform offering gateway, management UI, developer portal, and analytics with a focus on extensibility.

#6 Krakend

Ultra‑fast, stateless API gateway written in Go, designed for high‑throughput microservices aggregation.

Node.js‑based API gateway that enables authentication, rate limiting, and request transformation via a declarative config.

Open‑source API management platform offering rate limiting, API keys, caching, and analytics across multiple APIs.

Envoy‑based, Kubernetes‑native API gateway with support for REST, gRPC, and serverless functions.

Kubernetes‑focused API gateway built on Envoy, providing authentication, rate limiting, and developer portal capabilities.

#11 Fusio

PHP‑based open‑source API management platform offering a UI for creating, documenting, and securing APIs.

#12 Ocelot

.NET Core API gateway focused on routing, request aggregation, and service discovery for microservices.

Free, open‑source version of Kong with core gateway features, suitable for early‑stage startups.

Free version of Tyk offering essential gateway features without the commercial add‑ons.

#15 Apiman

Red Hat‑backed API management solution providing policy enforcement, rate limiting, and developer portal.

Core open‑source engine of KrakenD, enabling high‑performance API aggregation and transformation.