SHSelfHostIndex
IN

InstantDB

Realtime client-side database with relational queries

Developer Tools & Git ★ 10.5k stars Medium setup AGPL-3.0

Instant is an open-source realtime database that gives apps offline-first relational queries and instant sync. The backend server can be self-hosted to keep app data on your own infrastructure.

Official siteSource code

Key features

  • Realtime sync
  • Relational queries
  • Offline support
  • Self-hostable backend

Strengths

  • Released under the AGPL-3.0 license
  • First-class Docker support for quick deployment
  • Mature project with 10.5k GitHub stars
  • Written in TypeScript

Is InstantDB secure?

OSV.dev has no published security advisories for InstantDB's repository. No known vulnerabilities is not proof of security: it means none have been publicly catalogued.

Source: OSV.dev, checked 2026-10-14. How this is measured.

InstantDB replaces

Self-hosted Firebase alternatives

Health badge

Maintain InstantDB? Add its health score to your README. The badge links back to this page.

SelfHostIndex: 91 · excellent

Markdown
[![SelfHostIndex health score for InstantDB](https://selfhostindex.com/badge/instantdb.svg)](https://selfhostindex.com/app/instantdb/)
HTML
<a href="https://selfhostindex.com/app/instantdb/"><img src="https://selfhostindex.com/badge/instantdb.svg" alt="SelfHostIndex health score for InstantDB"></a>
reStructuredText
.. image:: https://selfhostindex.com/badge/instantdb.svg
   :alt: SelfHostIndex health score for InstantDB
   :target: https://selfhostindex.com/app/instantdb/

The score is recomputed on every nightly rebuild from public repository data — see how it is calculated.

Compare InstantDB

4 head-to-head comparisons.

Similar developer tools & git apps