Baseline is an official alternative to CanIUse, created directly by browser manufacturers. It provides a clear indication of which features and APIs are generally available across browsers. The list is updated annually, keeping developers informed of the most recent and widely supported features.
You can access Baseline on websites like web.dev and MDN. In the future, it can also be used in place of browserlists during development. By specifying a target, such as Baseline2023, developers will have a reliable list of features that are not included, ensuring they only use supported features in their projects.
For more information, check out the web.dev introduction to Baseline.