Monitor and learn SQL Server for free
Open Source SQL Server monitoring framework
SQLWATCH Cloud is Now Available
A zero-hassle-hosted solution.

Simple installation with dbatools
Install-DbaSqlWatch -SqlInstance SQLSERVER1, SQLSERVER2
Multiple installation methods are available, including offline, for those in corporate networks.
Multiple Dashboards
Power BI for in-depth analysis and Grafana for near-real-time screens.
Decentralised and centralised
It collects data on a local instance, and thus it is not restricted by the limitations of the “monitoring” server. In addition, data can be imported into a central repository for easy reporting. SQLWATCH is written entirely in T-SQL so database folks can customise it without having to learn another language.
Send data to Azure Log Monitor
Ease reporting and reduce footprint by offloading data to Azure Log Monitor.