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Directory /

Web & APIs

Discover open-source Web & APIs tools — each one community-curated and honestly ranked so you can find something dependable to build with.

31 open-source tools in this category.

ReactCurated

Meta's JavaScript library for building user interfaces from reusable components.

Web & APIs·MIT·248.7k stars
0
FlutterCurated

Google's UI toolkit for building natively compiled apps for mobile, web, and desktop from one codebase.

Web & APIs·BSD-3-Clause·178.7k stars
0
Next.jsCurated

Vercel's React framework for production — full-stack rendering, routing, and built-in optimizations.

Web & APIs·MIT·142.1k stars
0
SupabaseCurated

Open-source Firebase alternative: a Postgres database with auth, storage, realtime, and auto-generated APIs.

Web & APIs·Apache-2.0·108.7k stars
0
FastAPICurated

Modern, high-performance Python web framework for building APIs, with automatic docs and type validation.

Web & APIs·MIT·102k stars
0
BunCurated

Fast all-in-one JavaScript runtime, bundler, test runner, and package manager, built as a drop-in for Node.

Web & APIs·MIT·95.8k stars
0
DjangoCurated

Python web framework for building server-side web applications and APIs.

Web & APIs·BSD-3-Clause·89.6k stars
0
GinCurated

HTTP web framework for Go, built on httprouter, used for REST APIs and microservices.

Web & APIs·MIT·89.2k stars
0
Spring BootCurated

Java framework for building stand-alone, production-grade Spring applications and services.

Web & APIs·Apache-2.0·81.4k stars
0
HoppscotchCurated

API development environment in the browser: REST, GraphQL, and realtime clients; self-hostable.

Web & APIs·MIT·80.2k stars
0
NestJSCurated

Node.js framework for server-side applications in TypeScript, using Angular-style modules and dependency injection.

Web & APIs·MIT·76.6k stars
0
JSON ServerCurated

Spins up a fake REST API with CRUD endpoints from a JSON file, for prototyping frontends without a backend.

Web & APIs·MIT·75.7k stars
0
FlaskCurated

Python micro web framework for building web applications and APIs.

Web & APIs·BSD-3-Clause·72.2k stars
0
ExpressCurated

Minimalist web framework for Node.js, used to build HTTP servers and APIs.

Web & APIs·MIT·69.4k stars
0
TraefikCurated

Reverse proxy and load balancer for microservices, with automatic service discovery and HTTPS via Let's Encrypt.

Web & APIs·MIT·64.7k stars
0
NuxtCurated

Full-stack framework for building Vue.js web applications.

Web & APIs·MIT·60.8k stars
0
BrunoCurated

Desktop API client for designing and testing HTTP APIs, storing request collections as plain files.

Web & APIs·MIT·46.7k stars
0
gRPCCurated

RPC framework using HTTP/2 and Protocol Buffers for cross-language service-to-service communication.

Web & APIs·Apache-2.0·45.3k stars
0
Kong GatewayCurated

API gateway that manages, secures, and routes traffic between clients and backend or microservice APIs.

Web & APIs·Apache-2.0·44.1k stars
0
FiberCurated

An Express-inspired web framework written in Go and built on the Fasthttp engine.

Web & APIs·MIT·40.1k stars
0