UltraCompare is an excellent file content comparison tool developed by IDM Computer Solutions (the developer of the famous general-purpose text editor UltraEdit). It is able to compare plain text files, office documents, folders and binary files (such as EXE, DLL), and perform mergence, synchronization, and so on operations to files/folders in comparison.

When people need to synchronize, backup or frequently share files/data between a variety of devices (including computers and mobile phones), any traditional ways of file transfer are relatively inadequate. For example, a lot of cloud storage services like Dropbox have more and more and increasingly obvious limitations or restrictions. These include: files have to be uploaded to their servers for transfer, very limited disk space capacity, pretty high requirements on Internet connection speed and stability, limitation of transmission speed and bandwidth usage, very few acceptable file types, not high enough security, easy to be blocked by some countries, expensive cost, and so on. Thereupon, Resilio Sync (formerly called BTsync, full name BitTorrent Sync, now Sync for short) came out.

Once learn about Beyond Compare (BCompare),  you will find that using UltraCompare (if you ever used) is really a physical work - fatigue our eyes too much, then you will fall in love wth Beyond Compare and can't do without it.