Backblaze Computer Backup vs Duplicati
Backblaze Computer Backup and Duplicati are both backup software. Backblaze Computer Backup is a commercial product from Backblaze. Duplicati is open source under a license set out in its repository, with 15k GitHub stars.
Which to pick
- Pick Backblaze Computer Backup when
- You want set-and-forget offsite backup of a personal or small-office computer with unlimited data.
- Pick Duplicati when
- You want scheduled encrypted backups of a PC or small server to cheap cloud storage with a point-and-click interface.
Side by side
Backs up everything on a Mac or PC, including attached drives, to Backblaze's cloud for a flat fee per computer.
A backup client for Windows, macOS and Linux that makes encrypted, compressed, incremental backups to S3, B2, Google Drive, OneDrive, SFTP, WebDAV and many other destinations, managed through a web UI.
Deleted files are kept only 30 days unless you pay for longer, and it does not back up NAS drives.
It spent many years in beta and its local database has a history of corruption and slow repairs, so test restores regularly; part of the code is under a proprietary licence.
Production-ready
Usable
Desktop app and cloud service
Desktop app, command line and self-hosted server
Not published
C#, .NET and JavaScript
Closed source, sold by Backblaze
Open source, license unclear on GitHub
Closed source: you use it under the maker's terms and cannot change or resell the code.
GitHub could not read the license. Check it in the repository before reusing any code.
No Wikipedia article of its own
15k GitHub stars
Not known
Established: started 12 years ago, latest release v2.4.1.0_stable_2026-10-29.
Other comparisons
More backup software
Both sides were judged on 2026-11-03 from makers' descriptions, Wikipedia, READMEs and GitHub data. License, age and popularity lines are worked out directly.