What are some alternatives?
When comparing GoodSync and Duplicati, you can also consider the following products
rsync - rsync is a software application for Unix which synchronizes files and directories from one location...
FreeFileSync - Download the latest FreeFileSync 10.4. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
CrashPlan PRO - CrashPlan for Small Business backup software offers the best way to back up and store business & enterprise data securely - offsite, onsite & online in the Cloud.
SolarWinds Backup - Modern server backup software
Time Machine - Time Machine is the breakthrough automatic backup that’s built right into Mac OS X.
Dropbox - Online Sync and File Sharing