The free, fast, SSD optimised macOS cloning and folder sync utility.

SmartBackup is an easy to use macOS utility to sync folders, volumes, or to create a bootable clone of your startup disk. It supports different configurations for multiple destinations, excludes, can archive deleted or changed files, and features built-in automation.
SmartBackup uses its own custom sync engine which offers several perfomance advantages over other utilities. SmartBackup will immediately start copying data while it in parallel still analyses what has changed. SmartBackup's sync engine then uses multiple threads that copy files in parallel, squeezing the fastest possible performance out of your storage. This makes it significantly faster that other utilities when cloning SSDs or syncing between fast RAID or SAN storage.
SmartBackup can sync between internal and external harddrives, RAIDs, Xsan volumes and also network shares.

The most comprehensive and the best program of its kind
Supports more than 700 different servers (file, image and video hosters and cloud storage services)
Supports resumable uploads to Google Drive, YouTube, Dropbox and many other
Possibility to use premium accounts
Possibility of parallel uploading
Usually much faster than uploading via browser or original file-upload tool
No ads*, easy to use, multi-language environment
Technical assistance (possibility to add functions, servers at the request)