Preview. These maps are our reading of public sources and haven't been checked with the projects' maintainers yet.
Loro
High-performance Rust CRDT library (JS via WASM, Swift, Python) for collaborative, version-controlled JSON-like data including rich text, lists, trees.
loro.devActive
loro-crdt 1.17.1 released 2026-10-22 (checked 2026-10-25)
In Local-first
Where it stands apart
- Where does it keep data on the client by default, on its main platform? in memory or its own files (10% of 21 others)
What it shares with most of the community
- Is it actively maintained? active (76% of 21 others)
- How is the main thing licensed? permissive open source (MIT/Apache/BSD) (67% of 21 others)
- Can it run entirely on your own device or infrastructure, without the maker's servers? yes (81% of 21 others)
- Do you need an account to use it? no account (71% of 21 others)
- Who is it for? developers (90% of 21 others)
- Which shared standard or format does it mainly build on? none of these (its own format or interface) (52% of 21 others)
- Does an app built on it keep working fully offline, for both reads and writes? yes, full offline reads and writes (86% of 21 others)
- If the company behind it disappeared, would apps keep working? yes (81% of 21 others)
- Is end-to-end encryption built in? no (80% of 20 others)
Nearest neighbors
- Automerge 89% of 18 shared answers match
- Yjs 89% of 18 shared answers match
- TinyBase 76% of 17 shared answers match
Every answer
| Question | Answer | Source |
|---|---|---|
| Is it actively maintained? | active loro-crdt 1.17.1 released 2026-10-22 | 2026-10-25 |
| How is the main thing licensed? | permissive open source (MIT/Apache/BSD) v4: from the map's own 'license' question. MIT | source 2026-10-25 |
| How is it mainly sustained? | community, foundation, or research v4: from the map's own 'business' question. Open-source project by the Loro team; sponsorship-supported. Less sure about funding details. | source 2026-10-25 |
| Can it run entirely on your own device or infrastructure, without the maker's servers? | yes v4: from the map's own 'self_host' question. | source 2026-10-25 |
| Do you need an account to use it? | no account Open-source CRDT library; no service or sign-up. | source 2026-10-26 |
| Who is it for? | developers v4: from the map's own 'audience' question. | source 2026-10-25 |
| Which shared standard or format does it mainly build on? | none of these (its own format or interface) Its own CRDT library. | source 2026-10-26 |
| Does an app built on it keep working fully offline, for both reads and writes? | yes, full offline reads and writes | source 2026-10-25 |
| What does it need to sync between devices? (first that applies) | nothing extra: devices can sync peer-to-peer or over any transport README lists P2P synchronization; transport is up to the app. | source 2026-10-25 |
| If the company behind it disappeared, would apps keep working? | yes | source 2026-10-25 |
| Is end-to-end encryption built in? | no Not built in. | source 2026-10-25 |
| What shape of data does your app read and write? | JSON-like documents | source 2026-10-25 |
| How are concurrent edits resolved? (first that applies) | merged automatically, keeping both edits where possible (CRDT text, lists, maps) | source 2026-10-25 |
| Where does synced data live on the server side? | nowhere it manages (peers, or plain files and object storage) | source 2026-10-25 |
| Where does it keep data on the client by default, on its main platform? | stands apart in memory or its own files Docs are in-memory with export/import of snapshots/updates as bytes; persistence is up to the app. | source 2026-10-25 |
| How much data syncs to each client? | whichever documents or stores the app opens | source 2026-10-25 |
| Which platforms are first-class? | native SDKs in several languages (Swift, Kotlin, Rust…) Rust, JS (WASM), Swift; also Python bindings. | source 2026-10-25 |
| Are auth and permissions built in? | no, bring your own | source 2026-10-25 |
Sources
This page was derived from:
- GitHub · github.com/loro-dev/loro · read 2026-10-25
- Web page · loro.dev · read 2026-10-25
- Web page · loro.dev/docs · read 2026-10-25
Are you a maintainer? Claiming and correcting projects is coming soon.