Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia)
-
Updated
Jul 2, 2025 - TypeScript
A representational state transfer (REST) API is a way to provide compatibility between computer systems on the internet. The concept was first outlined in a dissertation by Roy Fielding in 2000.
Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia)
🔥 🔥 🔥 Open Source Airtable Alternative
⚡️ Express inspired web framework written in Go
🔥 🔥 🔥 Open Source JIRA, Linear, Monday, and Asana Alternative. Plane helps you track your issues, epics, and cycles the easiest way on the planet.
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.
🥧 HTTPie CLI — modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.
Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)
Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events.
A cloud-native Go microservices framework with cli tool for productivity.
Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.
Send push notifications to your phone or desktop using PUT/POST
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
Parse Server for Node.js / Express
lightweight, idiomatic and composable router for building Go HTTP services
gRPC to JSON proxy generator following the gRPC HTTP spec
swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.
Full Modular Monolith application with Domain-Driven Design approach.
An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.
Scalar is an open-source API platform: 🌐 Modern Rest API Client 📖 Beautiful API References ✨ 1st-Class OpenAPI/Swagger Support
Created by Roy Fielding
Released 2000