Preview. These maps are our reading of public sources and haven't been checked with the projects' maintainers yet.
Automerge
JSON-like CRDT library (Rust core, JS/WASM and other bindings) plus Automerge Repo for storage and networking, funded largely by Ink & Switch.
automerge.org/Active
@automerge/automerge 3.5.0 released 2026-09-16; repo pushed 2026-10-25 (checked 2026-10-25)
In Local-first
Where it stands apart
- Which shared standard or format does it mainly build on? Automerge (5% of 21 others)
- Where does it keep data on the client by default, on its main platform? no default: you pick a storage adapter (24% 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)
- 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
- Yjs 94% of 18 shared answers match
- Loro 89% of 18 shared answers match
- TinyBase 76% of 17 shared answers match
Every answer
| Question | Answer | Source |
|---|---|---|
| Is it actively maintained? | active @automerge/automerge 3.5.0 released 2026-09-16; repo pushed 2026-10-25 | 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. Independent OSS; Ink & Switch funds maintainers, plus sponsors, support contracts and grants. | 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. No proprietary infrastructure; sync server is open source. | source 2026-10-25 |
| Do you need an account to use it? | no account Open-source library; no maker 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? | stands apart Automerge It is Automerge. | 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 Any byte transport works (P2P, client-server, files); Automerge Repo ships an optional sync server. | 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; Keyhive (Ink & Switch research on E2EE/access control) is separate/experimental. | 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 no default: you pick a storage adapter Automerge Repo storage adapters (IndexedDB, Node filesystem, etc.); core library is in-memory with save/load bytes. | source 2026-10-25 |
| How much data syncs to each client? | whichever documents or stores the app opens Documents are the unit of sync via Automerge Repo. | source 2026-10-25 |
| Which platforms are first-class? | native SDKs in several languages (Swift, Kotlin, Rust…) JS and Rust core, with Swift, Python, C, Java and other bindings. | source 2026-10-25 |
| Are auth and permissions built in? | no, bring your own No built-in auth or access control (Keyhive is research). | source 2026-10-25 |
Sources
This page was derived from:
- GitHub · github.com/automerge/automerge · read 2026-10-25
- Web page · automerge.org/ · read 2026-10-25
- Web page · automerge.org/docs/repositories/storage/ · read 2026-10-25
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