Amazon S3 vs Duplicati
A detailed comparison to help you choose between Amazon S3 and Duplicati.
Quick Verdict
4.2/5
Amazon S3
198 reviews
3.8/5
Duplicati
323 reviews
Amazon S3 is rated higher (4.2 vs 3.8). AWS S3 stores and retrieves unlimited amounts of data via a simple web interface. Built for developers, enterprises, and anyone needing reliable, durable cloud storage with pay-as-you-go pricing. 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.
 Amazon S3 Scalable object storage for any data size or type | Duplicati Free open source backup to any cloud storage | |
|---|---|---|
| Overview | ||
| Rating | 4.2 (198 reviews)✓ | 3.8 (323 reviews) |
| Pricing model | freemium | free |
| Starting price | Free tier available | Free |
| Best for | Teams building on AWS who need reliable, scalable object storage for backups, data lakes, static content, or application data. | Home users and small businesses wanting free encrypted GUI backup to their existing cloud storage |
| Tags | ||
| Tags | free tiers3 compatibleapi accessus datacentereu datacenterapac datacenterterraform provider | free tieropen source |
| Visit Amazon S3 → | Visit Duplicati → | |
Amazon S3
Pros
- + Store unlimited data with predictable per-GB pricing
- + Achieve 99.999999999% durability through automatic redundancy
- + Integrate directly with EC2, Lambda, RDS, and other AWS tools
- + Use lifecycle rules to automatically move data to cheaper storage tiers
- + Control access granularly with IAM policies and bucket policies
Cons
- - Data transfer out of AWS incurs egress charges that can add up quickly
- - API requests have per-1000-request pricing; high-frequency access patterns get costly
- - Requires AWS account setup and understanding of bucket configuration for security
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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