RUNTIME

TypeScript-first schema validation. Define schemas once, get static types and runtime validation. The default validator for tRPC, Next.js server actions, and AI SDKs.

All-in-one JavaScript runtime, bundler, test runner, and package manager. Written in Zig, drop-in compatible with Node, dramatically faster install and start times.

The original server-side JavaScript runtime. V8 under the hood, npm ecosystem, and the default backend runtime for most production deployments.

Secure-by-default JavaScript and TypeScript runtime from Node's original creator. Built-in TypeScript, fmt, lint, test, and Deno Deploy for edge hosting.