In macOS Sonoma, currently in beta, you can create individual web apps for any website that you frequent in Safari, and have them sit beside other ...

Spark, which is officially an experiment the company is launching out of its GitHub Next labs, allows you to quickly build a small web app using nothing but natural language.

In-app browsers pose security and privacy concerns, and there's no easy way to avoid them. But with a little effort (perhaps, too much effort) some of their risks can be avoided.