API Tools

gRPC, REST and WebSocket client with environments, scripting and git-friendly storage.

Google Cloud API management using ESP and OpenAPI or gRPC service configs.

Automated API documentation and changelog from OpenAPI, AsyncAPI and GraphQL files.

Mac API client (now RapidAPI for Mac) for composing requests and generating client code.

SmartBear suite for functional, performance and security testing of APIs.

Postman VS Code extension for sending requests and running collections inside the editor.

Access gateway for databases and APIs with session recording and identity-aware proxies.

Open-source API gateway with a dashboard, developer portal and GraphQL support.

Open-source API management for design, publish, gateway, analytics and identity.

Kubernetes-native API gateway built on Envoy with developer portal and policies.

SDK and Terraform generation from OpenAPI with quality bars for public APIs.

Hasura REST

API Tools

Open data platform that wraps SQL databases with REST, GraphQL and a no-code app.

Consumer-driven contract testing for HTTP and messages with a broker.

GUI client for testing gRPC services with proto import and request history.

Apollo GraphQL

Development

GraphQL platform with Router, Studio, client libraries and schema graph management.

High-performance API gateway focused on aggregation, security and stateless configuration.

API mock and service virtualisation tool for HTTP stubs, record/playback and chaos.

Bruno

Development

Offline-first API client that stores collections as files in git instead of a cloud account.

API design platform with Studio, mock servers, style guides and OpenAPI-first workflows.

Cloud-native reverse proxy and API gateway with automatic service discovery.

Kong

Cloud & DevOps

API gateway and service connectivity platform for Kubernetes and hybrid environments.

OpenAPI documentation, linting and API registry with Redoc and a developer portal.

Microsoft API gateway, developer portal and policy engine for Azure and hybrid.

zeal by zealdocs — api · api documentation · dash — C++ source project.

Fay by xszyou — android · api · ue5 — Python source project.

trpc by trpc — api · next · nextjs — TypeScript source project.

showdoc by star7th — api · document · documentation tool — PHP source project.

skyvern by Skyvern-AI — api · automation · browser — Python source project.

gorilla by ShishirPatil — api · api documentation · chatgpt — Python source project.

python-binance by sammchardy — api · binance · cryptocurrency — Python source project.

presenton by presenton — ai agent · ai presentation · api — TypeScript source project.

cofounder by nraiden — api · design · generative — TypeScript source project.

NTrace-core by nxtrace — api · as path · asn lookup — Go source project.

nango by NangoHQ — access token · api · api client — TypeScript source project.

LocalAI by mudler — agents · api · audio generation — Go source project.

manticoresearch by manticoresoftware — api · bm25 · cpp — C++ source project.