Linux, Windows and Apple Mac File Hashing GUI Tool
This project has moved to www.quickhash-gui.org as of 2016-12-04. I kept v2.6.9.2 and below hosted here since Dec 16 but too many people were ignoring the fact that no updates were being posted here.
For the latest QuickHash v2.8.4 release (Aug 28th 2017), go to www.quickhash-gui.org, and note that as of 29/12/16 a Debian package is also available
Hey. At work it was necessary to create a tool to monitor servers and computers, which must always be online. For these purposes the MassPinger was created. It supports many groups and many computers in groups. CrossPlatform (for Linux compiled but untested), written in Lazarus. Sources available on homepage.