HyperSnap 6 is the fastest and easiest way to take screen captures from Windows screen, and text capture (TextSnap) from places where normal text copy is not possible. HyperSnap combines the power of a first-class screen capture application with an advanced image editing utility - wrapped into one easy-to-use tool.

ScreenHunter Pro - a very useful application for capture, processing and editing of images. Pride of its authors is a unique function of reception of pictures of even not separate windows, but only certain objects in them.
Not unique, but seldom enough function - text capture. It is useful, if the standard method of allocation and copying does not work. The graphic editor and possibility also is built in the program to receive the image from the scanner.