SysKit Insights is a 3rd party SharePoint performance monitoring tool that comes as a web and desktop application. It's made for SharePoint admins in On-Prem and Online environments.

Insights gathers all ULS, SQL, and Windows Event logs from all servers into one report and makes it easier for you to find the information you need. Powerful filters will help you filter out logs by the event type or server type and troubleshoot issues faster. You can specify which events you want to track, and the app sends real-time email alerts when they appear in any of the logs.

Insights also measures the SharePoint page performance caused by internal factors. It scans your pages and detects non-optimized CSS or HTML content, oversized images, and JavaScript files. All the tracked information combines into a single health score, providing you real-time insight into specific page health and how it has changed through time. Insights automatically detects the roles of servers and their online status. It pinpoints the SharePoint pages impacted by service slowdowns.