Compare it is a great file comparison tool for windows, being GUI based it's about as easy as it gets! You simply select the two files you wish to compare and it returns a split-screen, with one file on the left and the other on the right. The differences between the files are clearly shown by way of highlighting, it also leaves a space where the difference is on the other file, so the rest of the code matches up and again it's easier to see where the change is.
There''s lots of other useful little features, like the ability to send the difference to the other file or vice versa, by way of a single click.
The files are clearly titled at the top, this helps greatly with confusion. When starring into the abyss of a lcd until dawn you can easily forget which files current....well I can anyway, a quick glance up and you know your on track.
Having to remember to ctrl+tab to insert a tab for me is a minor niggle.
The standard functionality is that the tab key changes you over the the other file, I use the tab key frequently when indenting code.
If your like me, fear not, they have included a way to change the keymapping which is the perfect solution albeit a bit clunky. Found in the options, I removed the keymapping for the switching pane, which was set to the tab key. After this the tab key just did nothing, I had to go back and find the keymapping for inserting a tab and then remove the ctrl + tab and just add a tab on its on. Most keymapping I've used work on the logic that if a key isn't assigned, the default for the key is used. If you don't map a space bar to something,...it should produce a space.
Very useful file comparison tool for Windows that is extremely easy to use. It's available free as shareware, so you have nothing to lose.
Compare It for me is a time saving tool, it's quicker and easier to get a quick visual of differences when coding. It's also helped with troubleshooting, upgrading and various other in-house tasks where we have needed to check files against their originals to catalog any modifications.