BRORAT  FileChute has been one of the easiest and most useful apps I have used over the past 2 years. Great product and outstanding developer. Their bundle is a real bargain!  
(Version 4.0.1)

BRORAT   recently took a series of photos (~200) with my Nikon D200 of a major forest fire threatening the small mountain village here in Turkey where I live. When I got home and attempted to download the Compact Flash card using Adobe Lightroom, then in turn iPhoto, Graphic Converter, and iView Media Pro my computer could not read the photos. All attempts using other software and trying to direct download from the camera failed; the CF card was hopelessly corrupted. I found KLIX on the net and tried the free trial version. First I had to reformat the card in my Nikon as nothing would show up. Then I sat in absolute wonder as all of my beautiful photos appeared by magic in KLIX. I simultaneously went online and bought the license, then recovered all the photos in pristine condition. The setup and use of KLIX is simplicity incarnate. The purchase price is inconsequential considering the priceless photos that you can recover. I highly recommend this software.   
(Version 1.0)

ROY SHOEMAKER  I find iText to be a smooth, simple and easy to use text editor. It is much superior to TextEdit in opening simple text files; especially the "Read Me"s that come with all software installers. Additionally it adds more in flexibility and customization than TextEdit.   
(Version 3.1.5E)