Duplicati vs Backblaze Personal Backup
A detailed comparison to help you choose between Duplicati and Backblaze Personal Backup.
Quick Verdict
4.0/5
Duplicati
0 reviews
4.3/5
Backblaze Personal Backup
0 reviews
Backblaze Personal Backup is rated higher (4.3 vs 4.0). Duplicati is a free, open source backup client that stores encrypted, compressed backups to local drives or cloud storage (S3, B2, Google Drive, OneDrive, and more). Web-based UI. Backblaze Personal Backup offers unlimited computer backup for $9/month. Backs up your Mac or PC continuously in the background. No file size limits, no throttling.
Duplicati Free open source backup to any cloud storage | Backblaze Personal Backup Unlimited Mac/PC backup for $9/month | |
|---|---|---|
| Overview | ||
| Rating | 4.0 (0 reviews) | 4.3 (0 reviews)✓ |
| Pricing model | freemium | paid |
| Starting price | Free tier available✓ | From $9/mo |
| Best for | Home users and small businesses wanting free, encrypted, bring-your-own-storage backups with a GUI and a scriptable CLI | Individuals and home workers with one data-heavy Mac or PC plus external drives wanting set-and-forget unlimited backup |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ✓ | |
| Automated backups | ||
| Snapshots | ✓ | |
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ✓ | |
| Free tier | ✓ | |
| Tags | ||
| Tags | free tieropen source | mobile app |
| Visit Duplicati → | Visit Backblaze Personal Backup → | |
Duplicati
Pros
- + Client is completely free (MIT core) — you only pay your storage provider
- + Client-side AES-256/GPG encryption with keys that never leave your machine
- + Wide backend coverage: S3, B2, Azure, Google Drive, OneDrive, MEGA, Storj, WebDAV, SFTP, FTP and more
- + Incremental backups, deduplication, compression and scheduling keep storage costs low
- + Cheap tenant backup for Microsoft 365 and Google Workspace at $0.50 per user per month
Cons
- - Local metadata database can desync after interrupted runs; repair on large sets is slow
- - Years of 2.x beta left a mixed reliability reputation that newer releases have had to overcome
- - Free-tier support is community-only (forum, GitHub issues); priority support is a paid console feature
- - Open-core split: parts of the repository (console stack) are under the company's license, not MIT
Backblaze Personal Backup
Pros
- + Truly unlimited backup per computer — no capacity cap, no file size limit
- + Connected external drives included under the same license
- + One-year version history is free to enable; Forever retention metered at $0.006/GB/month
- + Restore by mailed encrypted USB drive (1–8 TB), refunded when returned within 30 days
- + Simple, stable pricing ($9/month or $99/year) with a 15-day no-card trial
Cons
- - One license per computer — multi-machine households pay full price each
- - No NAS, network drive, or server support
- - 30-day default version window is short for late-detected ransomware
- - No availability SLA for personal accounts
- - Monthly plans carry no refund; external drives must reconnect every 30 days
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