Cyberduck
Worth it
Confidence: Medium
Buy if you need a free, no-commitment file transfer client for Mac or Windows . it covers every major protocol.
Comparison
Cyberduck vs Mountain Duck
Cyberduck lands on Worth it, and Mountain Duck lands on Depends.
Mountain Duck
Depends
Confidence: Medium
Buy it if you need S3, SFTP, or B2 storage mounted as a real disk and native sync apps don't cover you.
| Compare | Cyberduck | Mountain Duck |
|---|---|---|
| Verdict | Worth it | Depends |
| Best for | Web devs uploading to hosts | Freelancers mounting S3/SFTP/B2 as a disk |
| Who it's not for | Teams needing scheduled, automated managed file transfer | Anyone happy with native Dropbox/Drive/OneDrive clients |
| Privacy | No known public vulnerabilities found in the sources reviewed. | Two high-severity 2025 CVEs around TLS certificate handling, since patched; no dedicated security page found. |
| Support quality | No support evidence in sources | Capterra customer service score 4.0/5 |
| Public sentiment | Third-party reviews describe it as flexible with wide cloud coverage and a simple UI, though less powerful than rival FTP clients.⁹ | Users love cloud storage appearing as a local disk, but stability complaints and the pricing-model switch split sentiment sharply. |
| Biggest gotcha | Guess: no formal vendor support . rely on community, docs, and GitHub issues³ | Pricing model flipped: App Store v5 is subscription; a forum thread calls the switch 'actual scam' |
Pick Cyberduck when
- Web devs uploading to hosts
- S3/B2 object storage browsing
- Occasional SFTP transfers
- Zero-budget individuals
When Cyberduck is not a fit
- Teams needing scheduled, automated managed file transfer
- Enterprises requiring vendor SLAs or compliance support
- Linux desktop users wanting a GUI
- Anyone wanting cloud drives mounted as disks . that's Mountain Duck
Pick Mountain Duck when
- Freelancers mounting S3/SFTP/B2 as a disk
- Mac users juggling multiple cloud providers
- Selective-sync and Cryptomator encryption users
- Cyberduck fans wanting Finder access
When Mountain Duck is not a fit
- Anyone happy with native Dropbox/Drive/OneDrive clients
- Spotlight-reliant Mac users . no Spotlight integration
- Teams moving huge datasets . large SFTP uploads report issues
- Buyers who hate subscription licenses . the App Store edition is one
Sources
- Cyberduck official sitecyberduck.ioofficial
- Cyberduck download pagecyberduck.ioofficial
- Cyberduck documentationdocs.cyberduck.ioofficial
- Cyberduck on GitHubgithub.comofficial
- duck CLIduck.shofficial
- Cyberduck on Microsoft Storemicrosoft.comofficial
- Cyberduck on Mac App Storeapps.apple.comofficial
- Cyberduck - Wikipediaen.wikipedia.orgreview
- Cyberduck - Softonic reviewcyberduck.en.softonic.comreview
- WS_FTP alternatives - SourceForgesourceforge.netreview
- BioGrids software listingbiogrids.orgreview
- Nectar object storage tutorialtutorials.rc.nectar.org.aureview
- Mountain Duck official sitemountainduck.ioofficial
- Mountain Duck Buy pagemountainduck.ioofficial
- Known Issues . Cyberduck docsdocs.cyberduck.ioofficial
- Mountain Duck Review . BestBackupReviewsbestbackupreviews.comreview