Convex

Reactive backend platform with real-time database, serverless functions, and automatic caching

Visit Website Free tier, paid from $25/mo per member

Convex is a reactive backend platform where the database, server functions, and caching work together as one system. It handles real-time subscriptions, ACID transactions, and file storage without requiring separate infrastructure. The free Starter plan is pay-as-you-go with no base cost, making it practical for solo founders to prototype and launch without upfront commitment.

What's good

  • Real-time data sync out of the box with no extra config
  • TypeScript-first with end-to-end type safety
  • Generous free tier that scales to zero

Watch out for

  • Vendor lock-in with no self-hosting option
  • Relatively new platform with a smaller community

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