Can someone please tell me if there is a free software that will allow me to backup ONE folder regularly to an external drive? I would do this manually but unfortunately I'm constantly adding things to this folder and would like only to have to backup changes made since last time and not have to worry about a long backup every single time (if it attempts to replace every single item when maybe only one new item has been added) or worse having duplicates backups added on the external. I know there has to be a way to do this but Time Machine is NO help. Main reason is Time Machine will not let me simply choose what folder I want included instead I have to exclude every folder I do not want backed up and there's just too many things to exclude and I'm not sure where to even start. Sadly I don't know how to run scripts or mess with terminal so please do not suggest that. I assume if I knew that I wouldn't even be on here asking this simple question. Thanks in advance to anyone who takes the time to tell me which software might be best.