Self-hostable open-source Backblaze alternatives
Cloud backup. Self-hosted backup tools let you back up to your own storage or any S3 cheaply.
Among 3 self-hostable open-source Backblaze alternatives tracked here, Duplicati currently leads on the Self-Host Health Score (93/100, 15k★, last commit 1d ago). For a Raspberry Pi or a low-RAM VPS, Kopia is the lightest at a documented ~256 MB (no external database). 3 of them publish official ARM64 images (Raspberry Pi / Apple Silicon).
| Tool | Health | Stars | Database | Min RAM | ARM/Pi | One-click | Updated |
|---|---|---|---|---|---|---|---|
| Duplicati
↗
Encrypted, scheduled backups to cloud/S3 with a web UI. |
93 Thriving |
15k★ C# |
SQLite | 512 MB | ✓ ● | — | 1d ago |
| Kopia
↗
Cross-platform encrypted backup with snapshots and a UI. |
93 Thriving |
13k★ Go |
none | 256 MB | ✓ ● | — | 2d ago Apache-2.0 |
| Restic
↗
Fast, secure, deduplicating backup CLI to many backends. |
87 Thriving |
34k★ Go |
none | 256 MB | ✓ ● | — | today BSD-2-Clause |
FAQ
What is the best self-hostable Backblaze alternative?
By the live Self-Host Health Score, Duplicati ranks highest (93/100).
Which open-source Backblaze alternatives run on a Raspberry Pi?
Those publishing official ARM64 images: Duplicati, Kopia, Restic.
Which is the lightest on RAM?
Kopia, at about 256 MB.