Browse web features by Baseline status, see what's newly available, and what is missing in which browser.

Web features explorer is a site from the W3C WebDX Community Group that shows the web-features data behind Baseline. It lists features by status: newly available, widely available, limited availability, discouraged and more.
It has pages for features missing only in Chromium, Firefox or Safari, pages for each recent browser release, and monthly release notes. RSS feeds cover new Baseline features and browser updates.
The data comes from web-features, MDN's browser-compat-data and web-features-mappings, and the site is regenerated often. The code is on GitHub under Apache-2.0.
Baseline