TL:DR; It is a free utility that can completely delete everything on your disk including the file system so that no data can be recovered or it can just wipe the free space so that already deleted files cannot be recovered.
Download Puran Wipe Disk Freeware - Rating: 4.42
PC Fresh helps you to optimize your Windows in a easy way. It supports to manage services and autostart programs. In addition it is possible to enable performance features and adjust settings like Windows experts.
Event Log Explorer is an effective tool for exploring, viewing, and analyzing events recorded in the Security, System, Application and other Windows event logs. It extends the standard Windows Event Log Viewer functionality and brings new features.
ManageEngine Exchange Reporter Plus is a web-based analysis and reporting solution for MS Exchange, providing you a profound insight on your organizations Exchange Server, Mailbox, Messages and Traffic.