Catto UI Component Library - React components with Tailwind CSS

Catto Auth UI - presentational React forms (sign-in, register, login) for Catto-based apps. Bring your own auth client.

Catto Email - NestJS email service with SendGrid integration

Catto Profanity - Multi-language profanity filter with Zod and NestJS support

Catto Auth - NestJS authentication module with JWT, WebAuthn, guards, and decorators

Catto ImageKit — reusable ImageKit upload auth signer, client upload, URL transforms, and a React upload component. No keys embedded; the consuming app injects them.

Catto Events - NestJS in-house event/analytics logging to your own DB (no third-party SDK)

Catto Auth - React/Next.js authentication with Better Auth, JWT, and mobile support

Catto SMS - NestJS SMS service with Telnyx integration

Catto SMS - Runtime-agnostic SMS sender (Telnyx) for Node/Edge apps. No NestJS, no secrets baked in.

Catto Push - React hooks for Capacitor push notifications

Catto reCAPTCHA - NestJS Google reCAPTCHA v3 verification

Catto Logger - Shared logger interface and Pino factories for browser and Node.js

Catto Mobile - React hooks for Capacitor mobile apps

Catto Push - NestJS Firebase Cloud Messaging (FCM) push notification service

Catto Payments - NestJS Stripe SDK wrapper (PaymentIntent, Checkout, Webhooks)

Catto Shared - Reusable TypeScript utilities (profanity filter, geo, color)

"An open source CSS animation library with which you can add animations to your website"

Box3D, Erin Catto's 3D physics engine, compiled to WebAssembly with SIMD and optional wasm threads. Isomorphic: works in browsers and Node.js, auto-detecting thread support.

Catto Contact - plug-n-play contact form: React component, hooks, schema, and a framework-agnostic SMS notifier