A couple of days ago, one of my web sites stopped working. Where once were lovely pages of information, there was now nothing but a blank screen. After investigating the server for a while, I tracked down the problem to a particular config file. If I changed the config file back to the previous version (of which I luckily had a backup), the site worked just fine. Put back the current version, and it stopped working again. I was thus pretty confident that the problem was somewhere within the config file, but now I needed a good tool to let me compare the 2 files in order to spot any differences. I looked at several programs that did this but this freebie stood out from the rest.
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