hoppscotch / hoppscotch

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Kong / insomnia

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

scalar / scalar

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

NangoHQ / nango

Connect your agents & product to 1,000 APIs.

massCodeIO / massCode

A free, open-source developer workspace. Snippets, notes, HTTP requests, calculations, and dev tools in one local-first app.

makenotion / notion-sdk-js

Official Notion JavaScript Client

hey-api / hey-api

👨‍🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins. Millions of weekly npm downloads. Used by Vercel, OpenCode, PayPal, AWS, Autodesk, and many more.

cortex-docs / cortex

Cortex - Generates interactive API documentation, typed SDKs, and MCP servers from OpenAPI, AsyncAPI, GraphQL, gRPC, OpenRPC, and Markdown.

flawiddsouza / Restfox

Offline-First Minimalistic HTTP & Socket Testing Client for the Web & Desktop

huggingface / huggingface.js

Use Hugging Face with JavaScript

VoidenHQ / voiden

Design, Test and Document APIs in plain Markdown. Compose Requests with API blocks. Reuse, Replace & Version everything just like code. Offline, Truly Git Native, No Lock-in.

algolia / algoliasearch-client-javascript

⚡️ A fully-featured and blazing-fast JavaScript API client to interact with Algolia.

sieblyio / binance

Node.js & JavaScript SDK for Binance REST APIs & WebSockets, with TypeScript & browser support, integration tests, beautification & more.

twurple / twurple

Interact with Twitch's API, chat and subscribe to events via PubSub and EventSub.

openapistack / openapi-client-axios

JavaScript client library for consuming OpenAPI-enabled APIs with axios