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Amanda vs Comet Backup: catalog facts
Amanda	Comet Backup
Free The community edition is free and open source. Commercial editions are paid.	Paid Commercial software with a free trial.
Windows, macOS, Linux, Self-hosted	Windows, macOS, Linux, Self-hosted
Archives are written with standard tar or dump, so they are readable without Amanda Balances daily full and incremental runs across clients automatically	Covers Windows, Linux, macOS, hypervisors and Microsoft 365 Choice of Comet cloud, any S3 service or your own storage
Configuration is dense and the documentation assumes Unix experience The interface is entirely command line	Aimed at businesses and MSPs rather than home users Pricing is not shown on the homepage
Self-hosted	Downloadable app, Self-hosted, Hosted service
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.