Kopia
Open-source backup tool with encryption, deduplication, snapshots, and both CLI and GUI.
HN commenters use it for encrypted, incremental backups to S3-compatible storage such as Backblaze or MinIO,123 and describe it as reliable with a handy GUI.4567 The one complaint is that its command-line interface is a bit worse than restic's.8
Why people recommend it
S3-compatible backends · 3
Commenters send backups to S3-compatible storage such as Backblaze, MinIO, or a generic S3 bucket.
“I use Kopia Backup software, sending all my important files to a compatible S3 bucket”
“Reliable for me is Kopia from Mac to S3 compatible volume (minio) on Synology.”
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“So set up encrypted backups, I use Kopia for that”
Reliability · 2
Users report it as reliable, with no real complaints, after switching from Time Machine or Borg.
“Reliable for me is Kopia from Mac to S3 compatible volume (minio) on Synology.”
“Now I use Kopia, no real complaints there.”
GUI · 2
It offers a GUI (kopia-ui) for browsing snapshots, unlike restic.
“https://kopia.io/ does the same +GUI but a bit worse on CLI front”
“I use Kopia Backup software, sending all my important files to a compatible S3 bucket”
Encrypted backups · 1
A self-hoster uses it for encrypted backups to an external SSD and Backblaze.
“So set up encrypted backups, I use Kopia for that”
Incremental snapshots · 1
Incremental snapshots work with S3 compliance retention as ransomware protection.
“I use Kopia Backup software, sending all my important files to a compatible S3 bucket”
Error correction · 1
It supports Reed-Solomon error correction.
“Kopia has error correction, with Reed Solomon.”
Caveats and dissent
Weaker CLI · 1
One commenter finds its command-line interface a bit worse than restic's.
“https://kopia.io/ does the same +GUI but a bit worse on CLI front”
Often compared with
Who recommends it in their own words
Threads where it came up
- Backups Aren't Simple 1 mention
- Creating backup storage sucks 1 mention
- OneDrive data now has an expiry date 1 mention
- Backblaze has stopped backing up your data 1 mention
- Ask HN: How do you keep your data private? 1 mention
- Time Machine-style Backups with rsync (2018) 1 mention
Data: kopia.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 7
“https://kopia.io/ does the same +GUI but a bit worse on CLI front”
“Kopia has error correction, with Reed Solomon.”
“Thanks, looks interesting.”
“I use Kopia Backup software, sending all my important files to a compatible S3 bucket”
“So set up encrypted backups, I use Kopia for that”
“Now I use Kopia, no real complaints there.”
“Reliable for me is Kopia from Mac to S3 compatible volume (minio) on Synology.”