1)   Super 2d/3d Graph Library 10.4
Award-winning .NET library for 2d and 3d chart drawing. Can be used either as a Winform control or in ASP.NET web pages. Standard Edition only 79$. Royalty-free!

 2)   O&O DiskStat Professional Edition 1
O&O DiskStat is a high-power tool for analyzing the used disk space on your storage volumes. With an easy-to-use interface, you can take a closer look at the file and folder structure of your internal and external drives.