Very different products and can't compare them. Veeam is enterprise-grade and used for a larger variety of mission-critical workloads. Kopia is meant for end-user backups (though folks use it for a bunch of other things too).

Note that Veeam contributes to Kopia - https://www.veeam.com/sys451

I’ve used Veeam’s free community edition [1] to backup personal computers. I’ve only used it on Windows, but they have agents for Linux, and Mac.

[1] https://www.veeam.com/agent-for-windows-community-edition.ht...

Veeam does both file and full system backups. Kopia is meant to do only file backups.

Veeam is an enterprise solution, and popular among sysadmins.

Compared to Veeam this actually manages to work sometimes.