Purrs like a kitten. Runs like Rust.

ʊ^•ﻌ•^ʊ The runtime that purrs & bites

Purrs like a kitten.

One binary replaces your runtime, package manager, test runner, linter, formatter and typechecker. Your `package.json` stays. Your code stays. Everything just runs faster — with tiny paws.

$ curl -fsSL https://meow.style/install | sh

Get started ♥ Adopt meow

npm-compatible TypeScript native WinterTC Web APIs

$ meow build → 5.7s ✦

ZERO CONFIG ✦OXC PARSER ✦SHA-512 VERIFIED ✦V8 SNAPSHOTS ✦PARSE ONCE ✦DENO CORE ✦ONE BINARY ✦SECURE BY DEFAULT ✦TYPESCRIPT NATIVE ✦npm COMPATIBLE ✦ZERO CONFIG ✦OXC PARSER ✦SHA-512 VERIFIED ✦V8 SNAPSHOTS ✦PARSE ONCE ✦DENO CORE ✦ONE BINARY ✦SECURE BY DEFAULT ✦TYPESCRIPT NATIVE ✦npm COMPATIBLE ✦

// the parse-once pipeline

Everything in perfect harmony.

Instead of forcing your runtime, package manager, linter and test runner to parse your codebase independently over and over, meow brings them under a single roof.

Powered by the ultra-fast Oxc parser, we map your code exactly once in memory. That single AST natively feeds the entire toolchain at once.

Zero allocationsZero configOne engine

your\_codebase/

Oxc parser → single AST

Runtime

Package Mgr

Linter

Test Runner

parsed once · fed everywhere

// zero-overhead engineering

Brutal performance. Adorable UX.

01

Soft Paws, Zero Waste

Packages download to a global cache exactly once, then instantly project into your workspace. Millisecond warm installs and 0 bytes of duplicated disk space.

02

Perfect Social Skills

No need to rewrite imports or fix configs. meow natively boots Next.js 15, Astro and Vite out of the box — seamless CommonJS & Node built-in compatibility.

03

Fast by Math, Not by Cheating

We don't skip cryptographic supply-chain signatures to win benchmarks. meow runs full SHA-512 verification, offloading heavy hashing to background OS threads so your network never stalls.

04

Deterministic Harmony

The clock is frozen and randomness is seeded so test environments are mathematically predictable every single run. Need real network or file access? Just pass --trust.

// architectural focus

The problems were already solved. We just stopped fragmenting them.

The JavaScript ecosystem doesn't need another competing standard — it needs unification. meow doesn't reinvent the wheel. We proudly leverage the hardened, cross-platform runtime abstractions engineered by the Deno team and marry them to Oxc's lightning-fast parsing pipeline — connective tissue that turns isolated, fragmented tools into a secure-by-default sandbox.

want to live dangerously? `MEOW_DANGEROUSLY_DISABLE_SECURITY=1` → leash off 🐾

// the benchmarks

Fast where it actually counts.

meow runs full SHA-512 supply-chain verification on every install — and still projects a 516-package workspace from cache in 301ms. On real Next.js 15 builds it leaves Node and Deno in the dust, and trades blows with the fastest runtimes on raw compute. On the work you actually ship, the claws come out.

\* 3 iterations · \~25+ pkg full-stack Next.js / Prisma workspace · real numbers, no shortcuts

0ms

Warm install

516 pkgs from cache · SHA-512 verified

0ms

Hot install

instant no-op re-install

0ms

File I/O

300-file read + write

0ms

Cold start

ahead of Node & Deno

Package install — Large workspace

lower is better · 516 packages · 2174 edges

ColdWarmHot

npm

5,231ms

Deno

624ms

Bun

526ms

🐾 meow

301ms ⚡

Global cache warm. 516 packages projected into place in 301ms, every signature SHA-512 verified along the way.

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☰

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