Your NAS and cloud drives
in Finder, over Tailscale.From anywhere.
KastDrive finds the machines on your tailnet and mounts their SMB shares in Finder, next to WebDAV, SFTP and S3-compatible cloud storage. Files stay online-only until you open them, so a home NAS feels like iCloud Drive from a coffee shop. No port forwarding, no public IP, no VPN to configure in KastDrive.
Needs the free Tailscale app. Priced below the alternatives: $29 once, or $12.99/yr, free for one mount.
Free tier: 1 mount, all protocols — no credit card required
Finder-native, iCloud-style UX
Uses Apple's official File Provider Extension API. Nothing to install in the kernel, no device drivers.
Files appear instantly
Remote files show up in Finder with a cloud badge the moment you mount a share — no waiting, no bulk download.
Download on demand
Double-click any file to fetch it on first open. Pin "Always keep offline" for files you need without a connection.
Sync both ways
Edits on your Mac propagate to the server within seconds. Conflicts resolve with readable `.sync-conflict` filenames.
Built for Tailscale users
KastDrive lists the peers on your tailnet and fills in the address for you. Mount your home NAS, office SMB share or Raspberry Pi from anywhere, over your existing Tailscale connection. There is nothing to open on your router and no public IP to expose.
How KastDrive compares
Every competitor here uses Apple's File Provider too. KastDrive's difference is the tailnet: it finds your machines and mounts them, and costs less.
| Feature | KastDrive | Mountain Duck 5 | CloudMounter | ExpanDrive |
|---|---|---|---|---|
| Tailscale peer discovery built in | Yes | No | No | No |
| SMB shares | Yes | Yes | No | Not listed |
| One-time price | $29 | $49 | $69.99 | — |
| Yearly price | $12.99/yr | — | $39.99/yr | Free personal; Business $29/mo |
Prices read from the vendors' own pages on 2026-10-09:Mountain Duck 5, CloudMounter, ExpanDrive. Mountain Duck is per user and per major version; CloudMounter prices are its Mac App Store in-app purchases. "No" means we found no Tailscale integration in the shipped app. No affiliation with any vendor.
Your files, exactly where you expect them.
Start free with one mount. Upgrade to Pro for unlimited mounts, bandwidth scheduling, and Cryptomator vaults.