DeltaSnap 
DriveSync 
DeltaSync 
Choose Noject if...
You have drives that should never be ejected, like a RAID or NVMe array on a Mac mini or Mac Studio, and you want a focused, always-on guard against accidental ejects with a one-shot bypass for the rare intentional one.
vs. 
Menu bar disk manager
Updated June 17, 2026
Noject vs. Mountain
Mountain is a broad menu bar disk manager: it mounts and ejects volumes (individually or in groups), auto-ejects on sleep, can quit the apps that block an ejection, and includes a per-volume protection option. Noject does one job: it locks selected volumes so they cannot be ejected by accident, enforced by a background agent across reboots, sleep, and reconnects.
Side-by-side
Features and capabilities
Current as of June 17, 2026
| Capability |
Noject
| Mountain |
|---|---|---|
| Primary purpose | · Prevent accidental ejection of permanently-plugged drives. | · A do-everything menu bar manager for mounting, ejecting, and sleep handling. |
| Blocks accidental ejection | ✓ Yes. Purpose-built and enforced by a background agent, with a one-shot bypass. | ◐ Offers a per-volume protection option as one feature among many. |
| One-shot bypass to eject when you mean it | ✓ Yes. Eject Once (bypass) permits a single unmount and re-arms afterward. | · Protection is a per-volume toggle rather than a one-time bypass. |
| Auto-eject on sleep | · No. Noject keeps protected drives mounted through sleep. | ✓ Yes. Can automatically eject all external volumes on sleep. |
| Quit apps that block ejection | · Not needed. Protection blocks ejects rather than forcing them. | ✓ Yes. Can identify and quit the apps holding a volume. |
| Remembers volumes by UUID | ✓ Yes. Protection is restored automatically when a drive reconnects. | ◐ Stores per-volume preferences. |
| Background enforcement agent | ✓ Yes. A lightweight agent keeps protection active with the UI closed. | ◐ Runs as a menu bar app. |
| Platform | · macOS 14 and later. Signed and notarised. | · macOS 10.8 (Mountain Lion) and later. |
| Pricing | · Free to download from our website (v1.0), or $5.99 on the Mac App Store for the full version with App Store exclusive features. Lifetime, no subscription. | · Paid, with a free trial (sold direct; the Mac App Store build can lag the latest version). |
Where Noject wins
- Blocks every eject and unmount attempt on protected volumes, whether from Finder, Disk Utility, Terminal, or a third-party app.
- A background agent enforces protection even when the UI is closed, and survives reboots, sleep, and reconnects.
- Remembers protected volumes by UUID and re-arms automatically when a drive is plugged back in.
- One-shot "Eject Once (bypass)" for the rare time you genuinely need to eject, without losing your settings.
- Private by design: no account, no telemetry, and it never reads or writes the data on your volumes.
Where Mountain wins
- One-click mounting and ejecting, including ejecting groups of volumes at once.
- Can identify and quit the apps that are blocking a volume from ejecting.
- Auto-ejects external volumes when the Mac goes to sleep, with global hotkeys and quick access to recent servers.
- Includes a per-volume protection option alongside its many other features.
Best fit
Choose Mountain if...
You want a full menu bar disk manager: fast mounting and ejecting, group actions, sleep auto-eject, and tools to handle apps that block an ejection.
FAQ
Common questions
Is Mountain an alternative to Noject? +
Mountain is a broad menu bar disk manager that happens to include a per-volume protection option, while Noject does one thing: enforce eject protection with a background agent and a one-shot bypass. If protection is your main need, Noject is the more focused choice; if you want a full mount, eject, and sleep manager, Mountain covers more ground.
Can I use both together? +
Yes. You can use a menu bar mounter for everyday media and let Noject protect the specific volumes you never want ejected. Noject only blocks ejects on the volumes you mark as protected.
What if I need to eject a protected drive? +
Turn off protection for that volume in Noject, or use Eject Once (bypass) to allow a single unmount. Protection resumes automatically afterward.
Sources and methodology +
Competitor capabilities are summarised from their official product pages and documentation. Noject claims reflect the shipping app reviewed on June 17, 2026. Check each developer for current features and pricing.
See an incorrect or outdated claim? Report an issue with this comparison .
Product names and trademarks belong to their respective owners. This comparison is not sponsored by or affiliated with them.
