PendriveSync supports syncronization of the files on the computer, with files on a removable device. You can arrange to sync several directories from your pc with several directories on your pendrive. If you sync files to the pendrive on a pc and if you plug it into another pc, it will recognise that the files of the pendrive are more recent, and will suggest you to sync in the other direction. So this is a very convinient way of syncing two different computers offline with removable devices. You can add many tasks in the software that will be carried out at the same time. You can also use the software with more pendrives, it will automatically recognise wich one was just plugged in. It is possible for you to easily input two directories, and sync them right away, too. The full version of the software is free to download. The developing is done by me only.