It creates instances of your actual browser to run external websites. It runs every website. If websites run on a browser, it runs on this too. 

I have made it PWA-exclusive because web custom tabs are not supported in the browser. I will keep improving it. RSS integration is also coming. nostr:note1cavmhw75yhsrz73f2zd0fadgetrefm6kgyuarqja4a245tjvkquqtmj4ys