loro-dev/loro
Make your JSON data collaborative and version-controlled with CRDTs observed · 2026-08-28
Health v2 · maintenance only
95/100
- Activity 99
- Release rhythm 87
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 2.5
- age_days: 1513
- days_rel: 7
- days_push: 7
- n_releases_24m: 123
Adoption not part of the score
6070 stars · 168 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Loro is a high-performance CRDT (Conflict-free Replicated Data Type) library that makes JSON-like application state collaborative, version-controlled, and synchronizable peer-to-peer. It provides text, rich text, list, map, tree, and counter containers with Git-like version history, available in Rust, JavaScript/WASM, Swift, Python, and community-maintained Go and C# bindings.
Use cases
- build a local-first app with offline editing and automatic sync
- add real-time collaborative editing to a document or rich text editor
- sync JSON state between devices over p2p without a central server
- add Git-like version history and time travel to app data
- implement multiplayer features like shared todo lists or kanban boards
- merge concurrent edits without conflicts in a collaborative notebook
When to choose
- you need conflict-free merging of concurrent edits across offline or p2p devices
- you want both real-time collaboration and full version history in one data layer
- you need high-performance CRDTs with fast document loading and delta updates
- you want bindings across Rust, JS/WASM, Swift, and Python
When to avoid
- you only need a simple client-server sync backend with no offline/concurrent editing
- your data model is a plain relational database with server-side transactions
- you need a full collaboration server with auth and presence out of the box - Loro is a data layer, not a sync service
Facets
library · maturity active
state-management serialization developer-tools sdk microservices cross-platform developer-tools privacy rust python wasm cross-platform go crdt local-first offline-first collaborative-editing p2p rich-text version-control real-time-collaboration real-time swift
10 sources
- readme: https://github.com/loro-dev/loro · fetched 2026-08-28 · 49f2bcd9d8bb
- homepage: https://loro.dev · fetched 2026-08-29 · 282b91179c95
- site_page: https://loro.dev/docs/tutorial/get_started · fetched 2026-08-29 · eda7e393d04a
- site_page: https://loro.dev/docs/tutorial/text · fetched 2026-08-29 · a6da28f359e3
- site_page: https://loro.dev/docs/tutorial/tree · fetched 2026-08-29 · 219c37786508
- site_page: https://loro.dev/docs/tutorial/list · fetched 2026-08-29 · ec1b3cf6ddf2
- site_page: https://loro.dev/docs/tutorial/persistence · fetched 2026-08-29 · d1cf9c989700
- site_page: https://loro.dev/docs · fetched 2026-08-29 · e40ca9a08a8e
- site_page: https://loro.dev/about · fetched 2026-08-29 · 8ee336a7f493
- registry_crates: https://crates.io/api/v1/crates/loro · fetched 2026-08-29 · 161584a3bf26
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| loro-dev/loro | main | 95 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem