Open links to particular domain with particular app I use a browser as my default, but wish that links to certain domains be opened by default with another browser. For example if an app has a button that opens a website it normally opens it in the default browser. For most situations this is fine, but there a few exceptions I would like to change the browser the site opens in.

Is it possible to set "rules" for default app per domain?
AFAIK stock Android itself doesn't have any such feature. But it totally depends on the app you are using to open other links. Apps can open certain links with other apps/browsers. For instance browsers (like Firefox) can open facebook and youtube links in their respective apps if installed. Also it depends on the app which you want to open for a certain domain (if it accepts URL forwarded by other apps). It depends on intent-filters an app declares in its AndroidManifest.xml file. For little more details on this see this answer.