restic if you want the small CLI. Kopia if you want snapshots plus a GUI. Duplicati if you want a web UI. Pick one repository format on day one.

Is this Backblaze B2?

No. B2 is object storage — /replace/aws-s3. This page is the backup client. You can point restic at B2 or at a bucket you host.

Where do the blobs go?

A volume, an S3-compatible store (/best/object-storage), or another disk you own.

Stacks / Sync

Easy

restic / Kopia / Duplicati

Backups you encrypt. restic is BSD-2-Clause; Kopia is Apache-2.0; Duplicati's root LICENSE is MIT — Backblaze Personal Backup without the vendor vault as the only copy.

The problem

Backblaze Personal Backup is a consumer backup subscription to their cloud. You wanted encrypted snapshots on a disk or bucket you control. restic is BSD-2-Clause. Kopia is Apache-2.0 with a GUI. Duplicati's root LICENSE is MIT (proprietary/ if present is separate). BorgBackup is a 3-clause BSD-style archiver already on /best/backup. This is not Backblaze B2 object storage (/replace/aws-s3) and not a file-sync share (/replace/dropbox). Restore one file as the test. Do not invent a restore-success rate.

Replaces

Backblaze Personal Backup

Replace Backblaze Personal Backup See all best open-source backup tools

Estimated SaaS saved

$1,200

per year, small team, before lock-in

Start on Railway

Garage / MinIO if this is the S3 bucket, not the backup client

Sponsor this stack Tip jar

Placeholder: restic/Kopia/Duplicati run as a job against a volume or S3-compatible bucket you already have. A single public website is the wrong shape. No one-click template in this repo yet — Start on Railway. Object storage stays on /stacks/minio-object.

The stack

restic
BSD-2-Clause encrypted backup program
Catalog entry →
Kopia
Apache-2.0 snapshots with client-side encryption and a GUI
Catalog entry →
Duplicati
MIT-licensed (root LICENSE) backup app with a web UI
Catalog entry →

Cost table

You stop paying	Typical / year	Self-host instead
Backblaze Personal Backup (household)	$1,200	restic, Kopia, or Duplicati

Agent setup prompt

Replace Backblaze Personal Backup with restic (CLI), Kopia (GUI), or Duplicati (web UI).

- Persist the repository. Encrypt it. Restore one file as the test. The destination can be a volume, another disk, or S3-compatible storage you already run.
- This is not B2 as a product page (/replace/aws-s3). Write AGENT_PROMPT.md.

Also as markdown: /stacks/restic-backup.md

FAQ

restic or Kopia?: restic if you want the small CLI. Kopia if you want snapshots plus a GUI. Duplicati if you want a web UI. Pick one repository format on day one.
Is this Backblaze B2?: No. B2 is object storage — /replace/aws-s3. This page is the backup client. You can point restic at B2 or at a bucket you host.
Where do the blobs go?: A volume, an S3-compatible store (/best/object-storage), or another disk you own.