I use an external hard drive to back up my important files. I've been using FBackup for quite sometime and it works well by allowing me to choose which folders I want to backup to my external drive. The only feature it is missing is a sync functionality where if I delete a file on my computer it will also delete it from the backup as well. My backup drives fill up quite quick because of a lot of extra files from previous backups that aren't removed. what other software is out there that will allow me to essentially sync specific folders to my external drive?