Yes, it does have shell integration (right click on a folder/file to open/compress/extract). It also supports drag 'n drop and it's a little more feature and design oriented than 7zip. WinRAR is a better program fur sure, but it is my belief that IZArc is superior to 7zip. I have an anecdote that doesn't really have much bearing on IZ vs 7z, but I actually managed to find a compressed file format that even the mighty 7zip couldn't open. To my surprise, IZArc had no problems with it. I'm sold.