InstantDB

San Francisco, CA, USA
Founded 2022

InstantDB is a client-side relational database that enables front-end developers to build real-time, collaborative, and offline-capable applications without managing back-end infrastructure. It provides a multi-tenant Postgres-backed sync engine with built-in support for queries, transactions, authentication, permissions, and storage, all accessible directly from the browser via a simple SDK. The project is open source under the Apache-2.0 license and is backed by Y Combinator.

Last Updated: March 13, 2026

Current Valuation

No valuation data available

Funding Summary

$3.4M

Total reported funding

Key People

Joe Averbukh
CEO & Co-FounderFounder
LinkedIn Profile

Core OSS Projects

A modern Firebase alternative providing a client-side relational database with real-time sync, offline support, auth, and permissions

License: Apache-2.0

Business Information

Technologies

Local-First
Database
Developer Tools
Real-time
Backend
Firebase

Sectors

Developers

Licenses

Apache-2.0

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