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cr-sqlite (vlcn.io)
SQLite run-time extension adding CRDT-based multi-writer replication (CRRs) so independently written SQLite DBs can be merged.
vlcn.ioMaintenance
No release since v0.16.3 (2024-01-17); only community build fixes in Aug 2026; TinyBase v10 removed its cr-sqlite persister as deprecated/unmaintained (checked 2026-10-25)
In Local-first
Where it stands apart
- Is it actively maintained? maintenance or slowing (10% of 21 others)
- Which shared standard or format does it mainly build on? SQLite on the client (14% of 21 others)
- Where does it keep data on the client by default, on its main platform? SQLite (19% of 21 others)
What it shares with most of the community
- 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
- Automerge 72% of 18 shared answers match
- Loro 72% of 18 shared answers match
- Yjs 72% of 18 shared answers match
Every answer
| Question | Answer | Source |
|---|---|---|
| Is it actively maintained? | stands apart maintenance or slowing No release since v0.16.3 (2024-01-17); only community build fixes in Aug 2026; TinyBase v10 removed its cr-sqlite persister as deprecated/unmaintained | 2026-10-25 |
| How is the main thing licensed? | permissive open source (MIT/Apache/BSD) v4: from the map's own 'license' question. MIT (repo); npm package lists Apache-2.0 | source 2026-10-25 |
| How is it mainly sustained? | community, foundation, or research v4: from the map's own 'business' question. Built by Matt Wonlaw (tantaman), who moved on (Rocicorp/Zero); now community-maintained at best | 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 SQLite extension library; no service or account. | 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 SQLite on the client SQLite extension. | 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 Plain local SQLite | 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 Transport-agnostic changeset exchange; can be P2P | source 2026-10-25 |
| If the company behind it disappeared, would apps keep working? | yes No company service | source 2026-10-25 |
| Is end-to-end encryption built in? | no | source 2026-10-25 |
| What shape of data does your app read and write? | relational tables (SQL or a relational query language) Conflict-free replicated relations (CRR tables) | source 2026-10-25 |
| How are concurrent edits resolved? (first that applies) | merged automatically, keeping both edits where possible (CRDT text, lists, maps) Column-level CRDTs (LWW registers, causal lengths, fractional indexes) | source 2026-10-25 |
| Where does synced data live on the server side? | nowhere it manages (peers, or plain files and object storage) Syncs SQLite-to-SQLite | source 2026-10-25 |
| Where does it keep data on the client by default, on its main platform? | stands apart SQLite | source 2026-10-25 |
| How much data syncs to each client? | everything the user can access Whole-CRR changeset sync; subsetting is up to the app | source 2026-10-25 |
| Which platforms are first-class? | native SDKs in several languages (Swift, Kotlin, Rust…) Loadable extension for any SQLite host (C/Rust core, JS WASM, iOS, Android, Python) | 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/vlcn-io/cr-sqlite · read 2026-10-25
- Web page · vlcn.io · read 2026-10-25
- Web page · vlcn.io/docs/cr-sqlite/intro · read 2026-10-25
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