WebDAV mount for Mac, without the drama.
KastDrive mounts Synology, Nextcloud, and ownCloud over WebDAV the way Apple intended — online-only files in Finder, enforced TLS, and ETag conflict detection that never silently overwrites your work. No more lost edits to the cloud.
Free tier: 1 WebDAV mount, forever — no credit card required
Why KastDrive for WebDAV on macOS
macOS can mount WebDAV natively, but it's read-only over HTTPS and silently clobbers conflicting edits. KastDrive fixes both — and makes it Finder-native along the way.
Synology, Nextcloud, ownCloud
One-click presets tuned for the big three self-hosted platforms, plus generic WebDAV for any compliant server — SabreDAV, Radicale, Apache mod_dav, and more.
TLS everywhere
HTTPS is the default, never optional. We validate certificates against the system trust store, pin your custom CAs, and refuse to fall back to plaintext HTTP.
ETag conflict detection
Every upload is guarded by If-Match ETag checks. If a file changed on the server since you last saw it, KastDrive saves your edit as a readable .sync-conflict instead of clobbering.
Finder, natively
WebDAV mounts land in Finder through Apple's File Provider Extension API — cloud badges, on-demand streaming, and bidirectional sync, exactly like iCloud Drive.
How it works
Three steps from server URL to a Finder sidebar you can edit from with confidence.
Pick your server
Choose a Synology, Nextcloud, or ownCloud preset, or paste any https:// WebDAV URL. KastDrive stores credentials in the macOS keychain.
Mount into Finder
Your WebDAV server appears under Locations in Finder. Browse thousands of remote files as cloud-badge placeholders — nothing downloads upfront.
Edit with confidence
Open a file to stream it on demand. On save, KastDrive checks the ETag first; if the server copy moved, you get a .sync-conflict instead of lost work.
KastDrive vs Mountain Duck for WebDAV
Mountain Duck mounts WebDAV through FUSE and resolves conflicts by last-write-wins. KastDrive streams on demand through File Provider and guards every save with an ETag check.
| Feature | KastDrive | Mountain Duck |
|---|---|---|
| Nextcloud / ownCloud | Tuned presets | Generic only |
| TLS enforcement | HTTPS required | Optional |
| Conflict detection | ETag (If-Match) | Last-write-wins |
| Online-only files | Yes — cloud badges | No — full download |
| Finder integration | Native File Provider | Kernel extension |
| Price | $0 free / $29 once | $39 + per-year renewals |
Mountain Duck pricing as of June 2026. No affiliation with Cyberduck/Mountain Duck.
Your self-hosted cloud, Finder-native.
Mount your first WebDAV server free. Upgrade to Pro for unlimited mounts, bandwidth scheduling, and Cryptomator vaults.