Beaker Browser is a browser that allows users to use the dat protocol to browse websites shared with peer-to-peer (p2p). This allows to disperse the computational power necessary to load a website. Basically, the more people seed (aka share on their own computer) your website, the faster your website and webapps will load. One of the main arguments about this is that many people host websites on servers that would not deal as well with a sudden huge number of visitors as a peer-2-peer network would (given that enough people seed a site under heavy traffic).

However, although this scenario is possible, the best thing Beaker Browser allows you to do is hosting your website on your pc, using only your browser, and allowing others to seed it so that you do not have to pay any cloud services to keep your site up. Moreover, you have full capacity of looking at the source of any website on the dat network. It seems, therefore, that the main advantage that this browser offers is to empower the users.

Even though the browser is still being developed, my experience is really positive so far and it has worked quite nicely, giving only few problems with memory leaks and one single freeze in a month of almost daily use.

Anyways, you should definitely check out this presentation on the browser, which is quite extensive and shows some examples.