This field is developing rapidly and this website will not attempt to remain up-to-date. Some example tools will be listed but they are only examples of the many options that might do similar things. It is simply designed to give you and idea of what is available.
Some people have predicted that AI will replace the browsers we have been used to (e.g. Google). Browsers have traditionally provide a list of links that the user must then read. AI can gather that information together and provide an summary plus then providing links for the user to follow-up.
Google still produces a list on links but does offer an AI generated summary of the search.
Arc Search scans the web and then produces a personalised "web page" summarising what it has found plus some key links. As at 5.2.24, there is an iOS app and the promise of a Windows app.
ShortForm - summaries of non-fiction books plus other resources (paid)