i like this most beacause we can compare the latest code with existing code so that we can found what is the latest changes in code.its very helpful and we can easily understand what changes are made in previous code.

We can compare two files and two folders to indentify difference between the files in easy and simple way. It can also copy the content to the other files while comparison.

We can comapre a text,image and a binary file through it and the other good thing is that you can also create a file comparison report and also if you find anything that has been entered or modified incorrectly there is a merge button to replace the corresponding line.Also very good than deltawalker.