- Edited
There are been a significant growth in paid, private search engines. With these search engines, you need to be signed in to be able to search. While this isn't a problem in and of itself, it can cause problems with certain browser features—like incognito mode. In incognito mode, because cookies are not saved, you cannot search as you are not logged into your search engine. The solution to this? The ability to use a separate search engine for incognito mode only.
Vivaldi is the only browser that I know of that offers this feature: