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.
Vercel's React framework for production — full-stack rendering, routing, and built-in optimizations.
Open-source Firebase alternative: a Postgres database with auth, storage, realtime, and auto-generated APIs.
Modern, high-performance Python web framework for building APIs, with automatic docs and type validation.
Fast all-in-one JavaScript runtime, bundler, test runner, and package manager, built as a drop-in for Node.
Python web framework for building server-side web applications and APIs.
HTTP web framework for Go, built on httprouter, used for REST APIs and microservices.
Java framework for building stand-alone, production-grade Spring applications and services.
API development environment in the browser: REST, GraphQL, and realtime clients; self-hostable.
Node.js framework for server-side applications in TypeScript, using Angular-style modules and dependency injection.
Spins up a fake REST API with CRUD endpoints from a JSON file, for prototyping frontends without a backend.
Python micro web framework for building web applications and APIs.
Minimalist web framework for Node.js, used to build HTTP servers and APIs.
Reverse proxy and load balancer for microservices, with automatic service discovery and HTTPS via Let's Encrypt.
Desktop API client for designing and testing HTTP APIs, storing request collections as plain files.
RPC framework using HTTP/2 and Protocol Buffers for cross-language service-to-service communication.
API gateway that manages, secures, and routes traffic between clients and backend or microservice APIs.
An Express-inspired web framework written in Go and built on the Fasthttp engine.