Dev tools · alternatives · 2026

24 alternatives to Hamoni Sync

Real-time application state/data synchronisation

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Hamoni Sync launched in 2018; newer entries below may have overtaken it.

1. 1
   PieSync▲89

   Seamless two-way sync between your CRM, Google Apps & more

   2015 · piesync.com · its alternatives →

2. 2
   OneCal▲323

   Synchronize your calendars in real-time

   2022 · onecal.io · its alternatives →

3. 3
   Bi-directional sync between Postgres and SQLite▲356

   Hi HN, Today we’re launching PowerSync, a Postgres<>SQLite bi-directional sync engine that enables an offline-first app architecture. It currently supports Flutter, React Native and web (JavaScript) using Wasm SQLite in the browser, with more client SDKs on the way. Conrad and I (Ralf) have been working on our sync engine since 2009, originally as part of a full-stack app platform. That version of the system is still used in production worldwide and we’ve learnt a lot from its use cases and scaling. About a year ago we started on spinning off PowerSync as a standalone product that is…

   2023 · powersync.com · its alternatives →

4. 4
   Deepstream.io – open-source real-time server with pub/sub and data sync▲301

   A realtime server for the modern web

   2016 · deepstream.io · its alternatives →

5. 5
   Whalesync▲362

   2-way sync Airtable, Webflow, Notion, Bubble, & Postgres

   2023 · whalesync.com · its alternatives →

6. 6
   Simperium, a realtime data layer▲208

   Simperium is a cross-platform data sync service.

   2012 · simperium.com · its alternatives →

7. 7
   ElectricSQL, Postgres to SQLite active-active sync for local-first apps▲617

   Hi HN, James, Valter, Sam and the team from ElectricSQL here. We're really excited to be sharing ElectricSQL with you today. It's an open source, local-first sync layer that can be used to build reactive, realtime, offline-capable apps directly on Postgres with two way active-active sync to SQLite (including with WASM in the browser). Electric comprises a sync layer (built with Elixir) placed in front of your Postgres database and a type safe client that allows you to bidirectionally sync data from your Postgres to local SQLite databases. This sync is CRDT-based, resilient to conflicting…

   2023 · electric-sql.com · its alternatives →

8. 8
   HyNote for Mac▲368

   Free local transcription that is 100% Private

   Aug 2026 · hynote.ai · its alternatives →

9. 9M2
   Muse 2.0 with local-first sync▲178

   Hey HN, I want to share with you something I and my four colleagues have been working on for the last several years. It’s a whiteboarding and notes tool called Muse[1]. We just released a 2.0 version which includes local-first sync. A little backstory: I’m one of the authors of the 2019 essay Local-first software[2]. (Past HN discussions[3][4].) The thesis is to reclaim some of the ownership over our data that we’ve lost in the transition from filesystems to cloud&#x2F;SaaS. So I’m excited to bring CRDT technology “out of the lab” and into a commercial product as a chance to prove the value…

   2022 · museapp.com · its alternatives →

10. 10
    Sync!▲97

    All-in-one toolkit for managing teams & processes

    2024 · teamsync.tools · its alternatives →

11. 11
    Synece▲40

    Instant data sync to elevate your data workflow

    2024 · its alternatives →

12. 12SR
    Sync – Realtime partials with Rails▲143

    I&#8217;m Chris McCord, a programmer with a passion for science and building things. I spend my time crafting the Phoenix Framework, working with &hellip;

    2013 · chrismccord.com · its alternatives →

13. 13
    Sunsama for macOS▲265

    If Trello & Google Calendar had a baby - now for Mac

    2018 · sunsama.com · its alternatives →

14. 14
    SyncKit – Offline-first sync engine (Rust/WASM and TypeScript)▲87

    Local-first collaboration SDK for React, Vue, and Svelte. Batteries-included: Rich text, undo/redo, cursors, and presence. - Dancode-188/synckit

    Nov 2025 · github.com · its alternatives →

15. 15
    SyncWith for Google Sheets▲217

    Data from any app into Google Sheets, reports & dashboards

    2021 · syncwith.com · its alternatives →

16. 16
    Handshake▲217

    Put promises on the blockchain

    2018 · autonomous.ai · its alternatives →

17. 17
    Simple realtime two-way sync with SSH, fswatch and rsync▲71

    DropBox/GoogleDrive-style 2-way sync using rsync and fswatch - francoisp/DuplexRsync

    2019 · github.com · its alternatives →

18. 18
    KySync – A C++ rewrite of Zsync with performance boost▲118

    A collaborative AI workspace, built on your company context. Build and orchestrate agents right alongside your team

    2021 · kyall.notion.site · its alternatives →

19. 19
    Resilio Sync▲72

    Simple file sync and share solution

    2020 · resilio.com · its alternatives →

20. 20
    Hyper Sync – The Simplest Way to Sync JSON to Core Data▲11

    JSON to SwiftData and back. SwiftData Sync. . Contribute to 3lvis/SwiftSync development by creating an account on GitHub.

    2015 · github.com · its alternatives →

21. 21
    GraphQL lib for real-time apps▲68

    A flexible GraphQL client and server library that can be used to power realtime applications. - tjmehta/primus-graphql

    2018 · github.com · its alternatives →

22. 22
    Sher.ly Virtual Space▲74

    Smart sync & share creative projects instantly

    2017 · its alternatives →

23. 23
    RealtimeApp – Deploy a realtime app using serverless components▲98

    2019 · github.com · its alternatives →

24. 24
    A clock synchronization library in golang for distributed systems▲26

    Distributed Time Synchronization Service. Contribute to rubrikinc/kronos development by creating an account on GitHub.

    2018 · github.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →