Tools

Know what's in the toolbox

What each tool is, how it's licensed, and when a dev would actually reach for it.

API frameworks

Build HTTP services, server APIs, and request handlers.

FastAPI

Python web framework for APIs

Builds HTTP APIs from Python type hints: requests are validated automatically, and an OpenAPI schema with interactive docs is generated for free. Supports async handlers.

NestJS

Open source

Structured Node.js server framework

A TypeScript framework for server-side apps built from modules, controllers, and providers wired by dependency injection. Validation, guards, OpenAPI docs, GraphQL, and rate limiting come as first-party packages.

Fastify

Open source

Fast Node.js web framework

A low-overhead Node.js web framework with JSON Schema validation and serialization built in, and a plugin system for everything else.

Hono

Open source

Web-standards web framework

A small web framework built on the standard Request and Response APIs, so the same code runs on Cloudflare Workers, Bun, Deno, Node.js, and serverless platforms. Middleware, a typed RPC client, and Zod-based OpenAPI are available.