The demo version of AllSync can be extensively tested for 21 days. It poses the following restriction as compared to the full version:
In the demo version you have only 2 copy profiles available to you for trying out all of AllSync's features. However, the full version enables you to set up any number of copy profiles you like.
AlDup is a freeware tool for searching and removing file duplicates on your computer. The fast search algorithm find duplicates of any file type, e.g., text, pictures, music or movies. The powerful search engine enables you to find duplicates with a combination of the following criteria: File Name, File Extension, File Size, File Content, Last Modified Date, Create Date, File Attributes and Hard Links