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Arq vs Backblaze Computer Backup: catalog facts
Arq	Backblaze Computer Backup
Paid Paid software with a 30-day free trial.	Paid $9 per month per computer after a free trial with no credit card required.
Windows, macOS	Windows, macOS
Back up to your own cloud storage or local disk End-to-end encryption	Unlimited storage for one computer Minimal setup, runs automatically
No Linux version Cloud storage is billed separately by your provider	One subscription per computer No Linux client
Downloadable app	Downloadable app, Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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