/rclone
"rsync for cloud storage" - Google Drive, S3, Dropbox, Backblaze B2, One Drive, Swift, Hubic, Wasabi, Google Cloud Storage, Azure Blob, Azure Files, Yandex Files
11
/kopia
Cross-platform backup tool for Windows, macOS & Linux with fast, incremental backups, client-side end-to-end encryption, compression and data deduplication. CLI and GUI included.
18
/restic
Fast, secure, efficient backup program
9
/borg
Deduplicating archiver with compression and authenticated encryption.
5
/duplicati
Store securely encrypted backups in the cloud!
4