Obsidian Sync costs $5/mo.
These cost $0.
3 free alternatives to Obsidian Sync, checked for license, recent activity and real adoption. Each one tells you the catch, so you can switch with your eyes open.
Obsidian Sync vs Free Alternatives Matrix
Quick side-by-side comparison · $0/mo vs $5/mo
| Alternative | Type | License | Where It Runs | Stars | Head-to-Head |
|---|---|---|---|---|---|
| Syncthing | open source | MPL-2.0 | Local | ★ 87k | Obsidian Sync vs Syncthing → |
| Nextcloud | open source | AGPL-3.0+ | Self-host | ★ 36k | Obsidian Sync vs Nextcloud → |
| iCloud Drive | free | proprietary, free | Hosted | ★ $0 forever | Obsidian Sync vs iCloud Drive → |
The picks
2 open source · 1 free to use · ranked by fit
- 01
Syncthing
open sourceMPL-2.0Local87kaug 2026Syncs the vault directly between computers; iPhones remain the awkward relative.
The catch vs Obsidian SyncIt has no central always-available history or recovery service, devices need overlapping availability to propagate changes, and iPhone/iPad support depends on third-party clients.
Install, platforms & data +
- platforms
- desktopclione-click install
- install
- Install a native package or binary on every device, exchange device IDs, and share the vault folder
- setup
- Every device needs a client and pairing, at least one peer must be online to receive changes, and there is no official iOS client
- your data
- The original Markdown files and attachments remain as normal files in selected folders on each peer; Syncthing keeps its configuration and index database locally
- checked
- 2026-08-11
- 02
Nextcloud
open sourceAGPL-3.0+Self-host36kaug 2026Your own cloud, complete with the privilege of maintaining your own cloud.
The catch vs Obsidian SyncIt can sync the folder, but it is not Obsidian-aware, does not provide the same conflict handling and version recovery by default, and makes you operate the cloud service.
Install, platforms & data +
- platforms
- desktopmobilewebself-hostedself-host, real ops
- install
- Nextcloud All-in-One Docker stack or a supported web-server/PHP/database installation, plus sync clients
- setup
- A practical deployment needs an always-on host, Docker or a full PHP/database stack, domain and TLS, storage planning, backups, and upgrades
- your data
- User files in a server data directory or object store; accounts, shares, file cache, versions, and other metadata in the database, with optional local synced copies
- checked
- 2026-08-11
- 03
iCloud Drive
freeproprietary, freeHostedFive free gigabytes and excellent Apple plumbing; everyone else gets a side door.
The catch vs Obsidian SyncIt is Apple-centric and lacks Obsidian Sync's vault-aware version history, deleted-file recovery, selective vault syncing and end-to-end-encrypted service across all supported platforms.
Install, platforms & data +
- platforms
- desktopmobilewebthey host it
- install
- Enable iCloud Drive in Apple-device settings; install iCloud for Windows from the Microsoft Store
- setup
- An Apple Account is required, free storage is shared with all iCloud data, and Android/Linux have no native iCloud Drive sync client
- your data
- Ordinary vault Markdown files and attachments in Apple's iCloud storage, mirrored or downloaded into Finder, Files, or File Explorer on signed-in devices
- checked
- 2026-08-11
Frequently Asked Questions
Direct answers · Obsidian Sync open-source replacements
What is the best free alternative to Obsidian Sync?+
The top free alternative to Obsidian Sync is Syncthing (open source, MPL-2.0). Syncs the vault directly between computers; iPhones remain the awkward relative. Other popular Obsidian Sync replacements include Nextcloud, iCloud Drive.
Can I self-host a free replacement for Obsidian Sync?+
Yes. Of the 3 free alternatives to Obsidian Sync, 1 can be self-hosted on your own server or local machine: Nextcloud (AGPL-3.0+).
How much does switching from Obsidian Sync to a free alternative save?+
Obsidian Sync starts at $5/month per seat ($60/year). Switching a 5-person team to a free alternative like Syncthing saves $300 per year in software subscription fees.
Should I vibe-code or build my own Obsidian Sync clone from scratch?+
Our build verdict for Obsidian Sync is YES (the core loop fits in a weekend). If you already accept local Markdown files, syncing folders across devices is a solved problem; the hard part is not the app, it is conflict-free convenience.
What is the catch when switching from Obsidian Sync to Syncthing?+
It has no central always-available history or recovery service, devices need overlapping availability to propagate changes, and iPhone/iPad support depends on third-party clients.
