I use winmerge a lot for reviewing the code changes in the large files. Winmerge has a support for upto 3 concurrent window viewing at the same time. We can also use different format of input files to view, modify the code. It is really useful for those who primarily works on the large text files to track the changes. Review collected by and hosted on G2.com.

Nothing as such, ui improvement can make it a more powerful tool in the current market. Review collected by and hosted on G2.com.