After using SnagIt for several years with my old company, I was in need of an open source replacement. After using everyone’s favorite research assistant, I found Greenshot. It doesn’t have all the bells and whistles that SnagIt has, but it has the basics which is what you use 80% of the time anyway.
So far, so good. If you are need of a good screenshot/capture tool, and don’t feel like forking over $50 for a SnagIt license, check out Greenshot.