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Dev tools · alternatives · 2026

OC

24 alternatives to Opbox – CRDT based sync for text files on disk

Hi! I’m one of the founders of s2.dev, and recently have been hacking on opbox, which is an open-source daemon that turns directories of text files (code, markdown, etc) into collaborative, multi-player workspaces. This started as a bit of an intellectual curiosity, to see if it was possible to do real-time sync at the filesystem level (i.e., in an editor-agnostic way). The idea is pretty simple: - Opbox workspaces are roughly analogous to git repositories (and can be used alongside existing git repos, to share live changes between commits) - When the opbox daemon is running in a workspace…

Opbox is an open-source daemon that enables real-time collaborative editing of text files and directories. It monitors local filesystem changes and syncs them across multiple users using CRDT technology, working with… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    File manager + CRDT Note Editor. Contribute to notebox/nbfm development by creating an account on GitHub.

    2024 · github.com · its alternatives →

  2. 2WC
  3. 3

    Hi HN community, I’m Zach, founder and CEO of Warp, and am excited to show you Warp, a fast Rust-based terminal that’s easy to use and built for teams. As of today, Warp is in public beta and any Mac user can download it. It works with bash, zsh, and fish. The terminal’s teletype-like interface has made it hard for the CLI to thrive. After 20 years of programming, I still find it hard to copy a command’s output; I always forget how to use `tar`; and I always have to relearn how to move my cursor. To fix fundamental accessibility issues, I believe we need to start innovating on the terminal,…

    2022 · warp.dev · its alternatives →

  4. 4

    Hi HN! Matrix-CRDT connects the worlds of Yjs [1] (a proven, high performance CRDT) with that of Matrix.org [2]. It started as an experiment, asking myself; can we store "state updates of a datastore" in Matrix instead of chat messages? Now, I'm convinced it's actually a really powerful combination to develop real-time, collaborative software. I'm using it for a new project and so far didn't have to write a backend yet. Matrix takes care of a lot of stuff: Authentication, E2EE, federation, hosting, etc. - so I can focus on the client. I love the ideas of Local First [3] software. Personally,…

    2022 · github.com · its alternatives →

  5. 5M2

    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/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 →

  6. 6

    Get access to every file and folder shared in your Dropbox

    2017 · dropbox.com · its alternatives →

  7. 7

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

    2019 · github.com · its alternatives →

  8. 8SC

    SyncedStore is a library for building distributed, real-time collaborative web applications that sync automatically. This used to be quite complex, but with SyncedStore it's as easy as sharing a pie!

    2021 · syncedstore.org · its alternatives →

  9. 9AV

    Hi everyone! I'm trying to create a version control system that solves some of the problems that Git and other version control software has when working in a team. Let me know if you have any feedback!

    2023 · jamsync.dev · its alternatives →

  10. 10

    A web-based collaborative LaTeX editor. Contribute to overleaf/overleaf development by creating an account on GitHub.

    2014 · github.com · its alternatives →

  11. 11
  12. 12

    This is an experimental extension for CRDTs, pg_crdt: GitHub repo[0]. It supports Yjs/Yrs and Automerge. The linked blog post [1] describes how we're thinking about this extension in a Supabase context. I want to emphasise this part: "pg_crdt has not been released onto the Supabase platform (and it may never be). We’re considering many options for offline-sync/support and, while CRDTs will undoubtedly factor in, we’re not sure if this is the right approach." [0] GitHub repo: https://github.com/supabase/pg_crdt [1] Blog post:…

    2022 · supabase.com · its alternatives →

  13. 13WS

    I’ve been in the MLOps space for ~10 years, and data is still the hardest unsolved open problem. Code is versioned using Git, data is stored somewhere else, and context often lives in a 3rd location like Slack or GDocs. This is why we built XetHub, a platform that enables teams to treat data like code, using Git. Unlike Git LFS, we don’t just store the files. We use content-defined chunking and Merkle Trees to dedupe against everything in history. This allows small changes in large files to be stored compactly. Read more here:…

    2022 · xethub.com · its alternatives →

  14. 14

    Open source cloud & desktop IDE. Contribute to CodeboxIDE/codebox development by creating an account on GitHub.

    2014 · github.com · its alternatives →

  15. 15

    I built NoteCove because I wanted notes and tasks that sync across devices without the data going to a SaaS company. The sync works through files on your own iCloud Drive, Google Drive, or Dropbox — there's no NoteCove server in the sync path. The tricky part was making this reliable. I ended up using CRDTs (specifically Yjs) for conflict resolution, which handles the case where you edit the same note on your phone offline and your laptop offline — both edits merge without losing either. It has a full task management system alongside notes: custom states, kanban boards, parent/child…

    May 2026 · notecove.io · its alternatives →

  16. 16
    Sync-in▲79

    Hi HN, I’m happy to announce the public launch of Sync-in (https://sync-in.com) — a secure, open-source platform to store, sync, organize, and collaborate on files, without compromising privacy. Sync-in wasn’t born from a business plan, but from a personal need: being able to access my files remotely, share them easily with family or colleagues, and protect my data — through a clean, responsive, and user-friendly interface. Over the past 10 years, it has evolved and matured to support individual, team, and organizational workflows. You can host your own workspace to organize,…

    Apr 2026 · sync-in.com · its alternatives →

  17. 17

    I've always been curious about real-time multiplayer user interfaces. When I found out about CRDTs and Yjs[1] I thought they could serve as a solid base for a project like that. So I built this pretty simple desktop-like UI (heavily inspired by lifeat.io) and used Yjs to replicate the whole UI state among multiple peers, creating the experience of a unique interface. Try online: https://yboard.lol [1]: https://github.com/yjs/yjs

    2022 · github.com · its alternatives →

  18. 18

    I'm excited to introduce Zerobox, a cross-platform, single binary process sandboxing CLI written in Rust. It uses the sandboxing crates from the OpenAI Codex repo and adds additional functionalities like secret injection, SDK, etc. Watch the demo: https://www.youtube.com/watch?v=wZiPm9BOPCg Zerobox follows the same sandboxing policy as Deno which is deny by default. The only operation that the command can run is reading files, all writes and network I/O are blocked by default. No VMs, no Docker, no remote servers. Want to block reads to /etc? zerobox…

    Mar 2026 · github.com · its alternatives →

  19. 19

    Free, open-source cloud productivity suite. Mail, Calendar, Contacts, and Drive - faster and leaner than Google Apps. Self-host or use our cloud.

    May 2026 · tinycld.org · its alternatives →

  20. 20

    A dead-simple dropbox alternative using Git. Contribute to prashanthellina/pullbox development by creating an account on GitHub.

    2015 · github.com · its alternatives →

  21. 21

    Real-time sync with your customers' user directories

    2022 · ory.com · its alternatives →

  22. 22
    HackMD▲142

    Your Collaborative Markdown Workspace for Knowledge Sharing

    2024 · hackmd.io · its alternatives →

  23. 23
    Openbin▲138

    Code and notes sharing built for command line warriors

    2023 · its alternatives →

  24. 24

    I built this because I was always creating machines on GH actions to test builds on different OS, and I wanted a tight CLI that could do it. I always saw Actions as this great resources and ephemeral machines you could do dev work in just were a natural way for me to work, so this grew out of that workflow. I didn't expect it to blow up, so it wasn't 100% finished when I posted it. But it should stabilize pretty quickly. Happy to know what you think and talk about it.

    May 2026 · ghost.charity · its alternatives →

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