What is Zero built with?

Zero is a TypeScript repo built with React, React Router, Vite, Hono, and tRPC. It reaches its data with Drizzle, signs people in with Better Auth, @tsndr/cloudflare-worker-jwt, and jose, sends email with Resend, uses AI through agents, ai, ElevenLabs, and OpenRouter, measures its use with PostHog, watches its errors with Sentry, makes its content with @react-email/components, dompurify, email-addresses, sanitize-html, streamdown, and 6 more, validates its data with Zod, @hookform/resolvers, and zod-to-json-schema, is tested with Vitest and @electric-sql/pglite, and uses idb-keyval, Redis, Postgres, MCP, and Gmail. It has 91,712 written lines, with 62 test files.

Read on November 13, 2026, at commit 3613273. Read it as markdown

The card says what it's built with. Its whole map opens it up: every part of the code and how it connects to the rest.

Frontend

The base 3

Styles 4

Interface 20

8 more

Icons 1

Backend

Support

Content 11

Validation 3

Testing 2

Tools 2

  • @microsoft/microsoft-graph-types1 file
  • @react-router/dev1 file

The base 1

Other 28

  • TanStack57 files
  • nuqs35 files
  • jotai17 files
  • date-fns8 files
  • autumn-js6 files
  • Effect6 files
  • tRPC4 files
  • remeda2 files
  • @dub/analytics1 file
  • @hono/trpc-server1 file
  • @microsoft/microsoft-graph-client1 file
  • dub1 file
16 more
  • tiny-glob1 file
  • uuid1 file
  • superjson5 files
  • dedent4 files
  • date-fns-tz3 files
  • base64-js1 file
  • clsx1 file
  • color1 file
  • isbot1 file
  • jsonrepair1 file
  • jszip1 file
  • lz-string1 file
  • p-retry1 file
  • partyserver1 file
  • partysocket1 file
  • pluralize1 file

Other repos with a similar stack

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Frequently asked questions

What language is Zero written in?
Zero is written in TypeScript, with 91,712 written lines.
What framework does Zero use?
Zero is built with React, React Router, Vite, Hono, and tRPC.

The proof: in apps/mail/package.json

What does Zero sign people in with?
Zero signs people in with Better Auth, @tsndr/cloudflare-worker-jwt, and jose.
Does Zero use AI?
Yes. Zero uses AI through agents, ai, ElevenLabs, and OpenRouter.
What services does Zero use?
Zero sends email with Resend, measures its use with PostHog, watches its errors with Sentry, and uses idb-keyval, Redis, Postgres, MCP, and Gmail.

The proof: apps/server/src/lib/services.ts, line 2

Does Zero have tests?
Yes. Zero has 62 test files and is tested with Vitest and @electric-sql/pglite.
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