Open-source obsidian.md sync server
https://github.com/acheong08/obsidian-sync Hello HN, I'm a recent high school graduate and can't afford $8 per month for the official sync service, so I tried my hand at replicating the server. It's still missing a few features, such as file recovery and history, but the basic sync is working. To the creators of Obsidian.md: I'm probably violating the TOS, and I'm sorry. I'll take down the repository if asked. It's not ready for production and is highly inefficient; Not competition, so I hope you'll be lenient.
Open-source obsidian.md sync server launched on August 24, 2023 with 416 votes, #52 of 4,347 launches that month and more than 99% of that year's launches.
In plain words
This is an open-source sync server for Obsidian.md, a note-taking application. Created by a high school graduate as an alternative to the official $8/month sync service, it replicates basic synchronization functionality across devices. The project currently lacks file recovery and version history features and is not optimized for production use. It is intended for users seeking a free syncing option rather than as a replacement for the official service.
written from the facts on this page · September 2026
Does a similar job
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Files.md – Open-source alternative to ObsidianMay 2026 · github.com · ▲730🌱 Private, quiet space for thinking. Simple app for .md files. - zakirullin/files.md
A highly opinionated, fully functional Obsidian vault2022 · github.com · ▲258A few months ago I noticed that I was quickly approaching my 10GB sync limit for my daily driver vault. I considered deprecating some of the heavier files and images, but I was worried how it would affect the integrity of my vault. Instead, I took the opportunity to think to myself -- what would the perfect vault look like? I began to write down some of the key philosophies and strategies I use in my driver vault which led to indispensable plugins, which led to more indispensable philosophies and on and on it went. I've chronicled these results into a fully working vault template that…
Cc-md – Zero-cost Obsidian sync across iPhone, Mac, and GitHubFeb 2026 · github.com · ▲8Here's something I realized: the most AI-native knowledge base isn't a SaaS product with an API. It's a folder of markdown files on your disk. Obsidian stores everything as plain .md files. That means Claude Code (or any AI tool) can grep, read, write, and traverse your entire knowledge base with zero setup. No API keys. No OAuth. No middleware. Just local file I/O. The only missing piece was sync. I wanted my vault on iPhone (iCloud), on Mac (local), and on GitHub (backup + version history) — without paying $4/mo for Obsidian Sync. cc-md is ~400 lines of bash. iCloud handles Apple…
- YAYAOS – A 1-click deploy, real-time sync engine for ObsidianMar 2026 · ▲5
Hey HN, I'm a heavy Obsidian user. I recently got tired of the two usual sync tradeoffs: 1. File-based sync (iCloud/Dropbox/Syncthing) that leaves you waiting for changes to propagate, or hands you a "conflicted copy." 2. Self-hosted setups (like CouchDB) that need touching VMs and dockerized databases to sync markdown. So I built YAOS: a local-first, real-time sync engine for Obsidian. Self-hosting OSS should have better UX. You can deploy the backend to your own Cloudflare account in one click. It fits comfortably in Cloudflare's free tier (costing $0/month for normal…
Obsidian for Mobile – Plain-text knowledge base on the go2021 · obsidian.md · ▲760Obsidian Mobile brings the power of our desktop app to your mobile devices.
macOS Reminder Sync for Obsidian Tasks2024 · turquoisehexagon.co.uk · ▲155Greetings, I started using Obsidian and the brilliant Obsidian Tasks plugin to manage Tasks in my notes however it didn't quite work for me as I would lose track of Tasks when away from my laptop, and there are no reminders for Tasks so it's not easy to stay on top of things. I wrote my first macOS App to solve the problem; Reminder Sync for Obsidian. It periodically scans your Obsidian Vault for Tasks and creates Reminders for them in Reminders.app! Once your Tasks are created as Reminders they are synced through iCloud so they are also visible on iOS; this solves the main problem I had…
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