Backblaze B2 vs Duplicati
A detailed comparison to help you choose between Backblaze B2 and Duplicati.
Quick Verdict
4.5/5
Backblaze B2
110 reviews
3.8/5
Duplicati
323 reviews
Backblaze B2 is rated higher (4.5 vs 3.8). Backblaze B2 offers S3-compatible object storage at $6/TB/month. Free egress when used with Cloudflare. Used by thousands of developers as a budget S3 alternative. 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 B2 S3-compatible storage at a quarter of AWS S3 pricing | Duplicati Free open source backup to any cloud storage | |
|---|---|---|
| Overview | ||
| Rating | 4.5 (110 reviews)✓ | 3.8 (323 reviews) |
| Pricing model | freemium | free |
| Starting price | Free tier available | Free |
| Best for | Developers and startups who need S3-compatible storage at the lowest possible price and don't require EU data residency | Home users and small businesses wanting free encrypted GUI backup to their existing cloud storage |
| Specifications (entry plan) | ||
| CPU cores | 0 vCPU | — |
| RAM | 0 GB | — |
| Storage | 0 GB | — |
| Bandwidth | 0 TB/mo | — |
| SLA uptime | 99.9% | — |
| Data-center count | 2 | — |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ✓ | |
| Data-center locations | ||
| Regions | United States | — |
| Tags | ||
| Tags | free tiers3 compatibleus datacenterapi access | free tieropen source |
| Visit Backblaze B2 → | Visit Duplicati → | |
Backblaze B2
Pros
- + $6/TB/month — significantly cheaper than AWS S3
- + Free egress when paired with Cloudflare
- + S3-compatible API — drop-in replacement
Cons
- - US-only datacenters — no EU data residency option
- - No EU-based storage
Duplicati
Pros
- + Completely free with web UI
- + Supports 20+ cloud storage backends
- + Strong AES-256 encryption
Cons
- - Occasional reliability issues reported
- - Less active development recently
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