# EpicenterHQ/epicenter

Open-source, local-first apps.

Repository: https://github.com/EpicenterHQ/epicenter
Canonical: https://ross.abutalabs.com/products/epicenter
Homepage: https://epicenter.so/
Language: TypeScript
License: NOASSERTION
License Family: other
Topics: svelte, sveltekit, tailwindcss, tauri
Last push: 2026-08-26T21:24:37+00:00

## Health v2 (maintenance only)
Score: 80/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 51, longevity 90
- inputs: {"age_days": 1266, "days_push": 7, "days_rel": 250, "gap_med": 0, "n_releases_24m": 66}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4771, forks 373 (observed 2026-08-28T04:08:59.404372+00:00)

## What it is
Epicenter is a local-first application platform and developer toolkit where an app's entire data set is a single CRDT (Yjs) document stored as plain text and SQLite on your machine, syncing across devices without a central server. It ships with apps like Honeycrisp (notes) and Whispering (transcription), plus MIT-licensed libraries for building your own local-first apps.

## Use cases
- build a local-first app that works offline and syncs across devices
- store app data as plain text and SQLite files I own
- sync notes between devices without a cloud server
- create a CRDT-backed data layer with synchronous reads
- transcribe meetings locally and keep the data on my machine
- own my data instead of locking it into a SaaS app

## When to choose
- you want local-first architecture with CRDT-based multi-device sync
- you want your app's data as plain files on disk that survive app deletion
- you're building Svelte/Tauri apps and want a shared data toolkit
- you value open-source, auditable software with no middleman servers

## When to avoid
- you need a mature, battle-tested framework with a large ecosystem
- you require server-authoritative data or centralized access control
- you need a traditional client-server database with SQL queries against a remote backend
- you want a polished end-user product rather than an early-stage platform

## Facets
- artifact type: framework
- maturity: active
- function: state-management, serialization, developer-tools, sdk
- domain: developer-tools, web-development, self-hosted, privacy
- platform: cross-platform
- tags: local-first, crdt, yjs, svelte, tauri, sqlite, notes-app, data-ownership, offline-first, desktop, web-server, typescript

## Member repositories
- EpicenterHQ/epicenter (main) score 80

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:59.404372+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:18:47.846812+00:00, confidence not recorded.
  - readme: https://github.com/EpicenterHQ/epicenter (fetched 2026-08-28T04:08:59.404372+00:00, sha ac0475b5d495)
  - homepage: https://epicenter.so/ (fetched 2026-08-29T09:02:22.421088+00:00, sha 674aa024bc5a)
- Data as of 2026-08-30T08:39:29.467469+00:00.