passionfingers writes "My business users regularly have to tweak large (>32MB text) data files manually. Overlords charged with verifying the aforementioned changes have requested that the little people be provided with a new file editor that will track changes made to a file (as a word processor does). I have scouted around online for such an animal, but to no avail — even commercial offerings like UltraEdit32 don't offer such a feature. Likewise on the OSS side of the fence, where I expected a Notepad++ plugin or the like, it appears that the requirements to a) open a file containing a large volume of text data and b) track changes to the data, are mutually exclusive. Does anyone in the Slashdot community already have such a beast in their menagerie? Perhaps there is there a commercial offering I've missed, or could someone possibly point me to their favorite (stable) OSS project that might measure up?"