CloudBerry Backup for macOS supports Amazon S3, Amazon Glacier, Microsoft Azure, Google Cloud and other cloud storage providers. It’s available in Freeware and Pro versions.
Freeware version. Designed for personal use only. Comes with most of the features of the PRO version, such as flexible scheduler and retention policies.
PRO version. Comes with advanced features: compression and encryption. The price is $29.99 for a single perpetual license.