Restic and Duplicacy are both excellent. They are also not a replacement for a supported product if nobody on your team wants to own the scripting. Here's the honest take on when self-hosted backup tooling wins and when it costs you more than a license.
Restic is fast, deduplicates well, and targets nearly any object store. Duplicacy has a different architecture that handles cross-client dedup nicely. Both are solid.
They win when you have a small number of servers, a team that's comfortable in a shell, and a repo owner who will actually maintain the scripts.
They lose when you need an agent fleet, centralized reporting, and someone to call at 2 a.m. That's what you pay Veeam or Commvault for.
The middle path: use Restic for your Linux fleet, use a supported product for Windows workstations and Hyper-V or VMware, and don't pretend one tool fits everything.
The honest rule: if you can name the person who will fix the Restic cron job when it breaks in eighteen months, great. If you can't, buy something.
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