BizTalk360 - BizTalk360 is a web based production support/monitoring tool for Microsoft BizTalk Server.
Anturis - Anturis offers hosted server monitoring software (SaaS) for both Windows and Linux.
NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
LepideAuditor for Active Directory - LepideAuditor for Active Directory is said to be the must-have part of the IT environment and IT administration purpose.
mackerel.io - mackerel.io is a server and application performance monitoring platform.
Crowd Vox - Crowd Vox is a secured, robust, fully configurable, and customizable review script that helps you to create feature-rich business directories.