TinyBase

TinyBase is a reactive in-memory data store with persistence and > synchronization for local-first JavaScript and TypeScript apps.

TinyBase provides reactive tabular and key-value data, optional schemas, indexes, relationships, queries, persistence, CRDT synchronization, and UI bindings for React, Solid, and Svelte. It has no runtime dependencies.

Use TinyBase when an app needs one or more of these capabilities:

• Reactive in-memory tabular or key-value state - Offline or local-first operation - Browser, SQLite, PostgreSQL, or file persistence - Deterministic synchronization between clients or servers - Typed schemas and reactive React, Solid, or Svelte bindings

TinyBase is not a hosted database service. A Store lives in a JavaScript runtime, so an authoritative or unbounded server-side dataset may require a database or service alongside TinyBase.

Start here

• Is TinyBase right for my app? - Getting started - Guides - API reference - Demos - create-tinybase scaffolding tool
• Official build-with-tinybase agent skill
• Full agent guide - GitHub repository

Choose an architecture

• Use createStore from tinybase for reactive local state. - Add a Persister when data must survive reloads or be stored externally. - Use createMergeableStore from tinybase/mergeable-store when data must be merged or synchronized.
• Add a Synchronizer to exchange MergeableStore changes between clients or servers.
• Use tinybase/ui-react, tinybase/ui-solid, or tinybase/ui-svelte for reactive framework bindings.

Canonical documentation

• Store - MergeableStore
• Persistence guides - Synchronization guides - Architectural options - React guides - Solid guides - Svelte guides