Can anyone comment on them?
I've never used either, but here are some observations:
The prerequisites for queXF look a bit daunting for a non CS/IT person. Do you know mySQL, for example? Or even have it installed? I think you'd spend more time fiddling with the supporting s/w than just hand counting the results. If you had a lot of this sort of stuff to do, it might be worthwhile.
Udai: A crude and simple interface. Read the directions carefully, but if you can handle that its not overwhelming for most people with basic computer skills. It does seem to require a custom form, built with PowerPoint. If you've got that installed, and know it, good. If you already have a form built, this could be a stumbling block.
