You can use Zoom in the browser. They "just" discourage it by using a dark pattern. The link for the web client is small and gray and the browser tries to open the desktop app automatically.
You can also join by phone, at least in some circumstances.
Yeah, which makes it a pretty annoying barrier if you want to make an ad-hoc call to someone. Sending a Meet link is more convenient. Plus, Zoom is pretty crippled on the web in the feature department.
You can also join by phone, at least in some circumstances.