[laurenbee]

I collaborate on PowerPoint presentations every time my organization has a major presentation due (frequently). The Track Changes feature in Microsoft Word is good enough for documents and all of my coworkers understand how it works, but wrangling everyone's changes into PowerPoint and then letting them know what changed is a nightmare.

When I edit a PowerPoint presentation, I usually add a comment to every slide that has changed and describe all changes to the slide. Other people might put a star on slides they updated, leave the original slide plus the new slide so I know which slides have changed, or not mark their changes at all. Also, we have to email the presentation back or forth or edit it from one shared folder (in which case, multiple people can't work on the slides at the same time). It is very inefficient.

[alok-g]

As I wrote in another comment here, TortoiseSVN and TortoiseGit support diffing PowerPoints.