I am a total nut when it comes to collecting free Photoshop brushes! The problem is, I have so-o-o- many that I haven't even got around to weeding thru and seeing what I have.
Problem solved!!! I found this free open-source software download that lets you view the brush before installing the brush into your Presets folder. Very Very cool!
Also, it's avail for Mac and Pc!
Click for download and install