Convex

The fullstack TypeScript development platform with reactive queries

From $0/mo

About Convex

Convex reimagines backend development by treating your entire backend as a single, consistent TypeScript codebase. Its database uses a document model with ACID transactions and automatically syncs query results to connected clients in real time. Serverless functions run in a managed cloud environment with zero cold starts for queries. The platform includes built-in scheduling, background jobs, and file storage, removing the need to stitch together multiple services. Convex's type-safe end-to-end API means your frontend and backend always stay in sync. It's particularly well-suited for collaborative, real-time applications where data consistency and developer experience are priorities.

Key Features

Real-time reactive queries with automatic UI sync

End-to-end TypeScript type safety

ACID transactions on document database

Built-in serverless functions with no cold starts for queries

Integrated file storage and CDN

Scheduled functions and background jobs

Built-in authentication helpers

Pros & Cons

Pros

• Zero boilerplate for real-time data — reactive queries just work
• Exceptional TypeScript DX with full type inference across client/server boundary
• No infrastructure management — truly serverless with generous free tier
• ACID transactions in a serverless context is rare and valuable

Cons

• Vendor lock-in is significant — migrating away requires a full rewrite
• Document model may not suit complex relational data needs
• Smaller ecosystem compared to Firebase or Supabase
• Limited to JavaScript/TypeScript — no other language support

Best For

Indie hackers building real-time SaaS apps TypeScript-first teams wanting a unified backend Startups prototyping collaborative tools Developers building chat, multiplayer, or live-data apps