NIXStats - SaaS monitoring tool for window/linux servers and websites. Think up-time robot but with more features.
Noction Flow Analyzer (NFA) - Powerful, Feature-rich, Affordable in-depth traffic analysis system, built with network engineers in mind.
Network Server Suite - Network Server Suite is a network server monitoring software for Windows, Linux, or AIX that manage all of network servers, services, applications, and devices from a single, mobile-ready console.
N-able Backup - Backing up your data and data protection has never gotten easier.
mackerel.io - mackerel.io is a server and application performance monitoring platform.
Coralogix - Coralogix is a machine learning powered log analytics solution aimed to solve the problem of unmanageable log data.