Alternatives

Products that do what A local-first, real-time global canvas using CRDTs does

This is a demo of a family of libraries intended to make it easy to build local-first, real-time applications for mobile, desktop and the web using CRDTs. It currently has support for using Sqlite, PostgreSQL or a plain old record store (Hive) as data storage backend. https://github.com/cachapa/crdt There's also a websocket sync layer that transparently handles the connection and delta changesets between participants. https://github.com/cachapa/crdt_sync

1. 1WC
   Working code for Operational Transformation/CRDT hybrid▲130

   2017 · medium.com

2. 2
   Here▲307

   Hang out and collaborate over video on a real-time canvas

   2020

3. 3CJ
   Crudlet.js – A common, streamable interface for synchronizing data▲94

   2015 · github.com

4. 4CB
   CRDT-Backed Realtime Database▲5

   2021 · docs.ditto.live

5. 5GR
   Graphql2chartjs: Realtime Charts Made Easy with GraphQL and ChartJS▲96

   2019 · github.com

6. 6DT
   Domain-tailored CRDTs for collaboration without server involvement▲158

   2018 · archagon.net

7. 7GL
   GraphQL lib for real-time apps▲68

   2018 · github.com

8. 8DA
   ducksboard, a real time dashboard using websockets▲41

   2011 · ducksboard.com

9. 9CR
   CRDT research, with Swift code and real-time collaboration over iCloud▲8

   2018 · github.com

10. 10RP
    Realtime Postgres▲62

    2020 · github.com

11. 11SO
    Syncular – offline-first SQL sync with TypeScript and Rust cores▲79

    Aug 2026 · github.com

12. 12
    LiveSyncDesk ▲79

    Real time collaboration with a portable synced board.

    Jan 2026

13. 13
    Kodezi Chronos-1▲56

    A debugging-native language model

    Dec 2025

14. 14ET
    End-to-end encrypted notes app▲6

    One year ago I started to explore combining CRDTs with end-to-end encryption to allow people to collaborate on the same documents/data. Couple months back I got a first prototype working. Think of a simple Google Docs, but end-to-end encrypted and offline-first (iOS & Android for now). Why CRDTs? Every document is a CRDT data structure. This is very important for conflict resolution. With CRDTs this can happen on the client and everyone can resolve to exactly the same state of the document once all the updates are synchronised. This basically allows to exchange the updates/data via…

    2021

15. 15PT
    Paymo Time Tracker – React and GraphQL-based Photoshop Plugin▲35

    2017 · exchange.adobe.com

16. 16WR
    Wave – Realtime Web Apps and Dashboards for Python▲31

    2020 · github.com

17. 17RS
    Realtime Slack clone using Postgres▲29

    2020 · github.com

18. 18PT
    Paymo Time Tracker with Electron, React and GraphQL▲13

    2018 · paymoapp.com

19. 19RR
    Realtime Replication Between GraphQL and the Client-Side Database▲17

    2019 · rxdb.info

20. 20OB
    our (bootstrapped) Real Time Analytics + Social Media Monitor Startup▲8

    Hi HN, The two of us are working on our real time analytics service Worldlogger for two-an-a-half months now. Today we rolled out a new version. It still has some bugs here and there, but it works :) Worldlogger kind of does what Chartbeat and Getclicky are doing, but we try to mix the best from both worlds ;) Curious what you think about it! http://worldlogger.com/ Cheers E

    2010

21. 21LM
    live map infographic of activity in Couple using Canvas and WebSockets▲7

    2014 · map.couple.me

22. 22AO
    ApexCharts – Open-Source Chart Library for Web▲13

    2018 · apexcharts.com

23. 23SG
    SQLiteChangesetSync – Git-Like Sync for SQLite Databases▲5

    Hello HN! I’m happy to introduce SQLiteChangesetSync, a Swift package I’m sharing for the first time. It’s designed for offline-first synchronization of SQLite databases across devices. The package uses the SQLite Session Extension for capturing and committing changes in the local database. When the client is online, these changesets can then be pushed to a shared repository, which could be any server or database (example CloudKit implementation included). Other clients can fetch these changesets to keep their local databases consistent. SQLiteChangesetSync supports branch merging when…

    2023 · github.com

24. 24GS
    GraphQL Subscriptions – Realtime messaging and dashboarding app▲11

    2016 · github.com

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