Elfeed, the feed reader for Emacs, is built on several clever ideas. The basic mode of interaction in Elfeed is through search, specifying what kinds of feeds you want to peruse at the moment. This removes the distinction between an inbox and a search result, which works surprisingly well with the expressive search syntax. The second is integration: search results can be stored as regular bookmarks, and jumping to the bookmark from anywhere in Emacs will run the corresponding query and presen...