Back when it still worked for most of the web (and before it became the progenitor of most contemporary browsers) KDE's Konqueror was my favourite and default b

Back when it still worked for most of the web (and before it became the progenitor of most contemporary browsers) KDE's Konqueror was my favourite and default browser. It came with a bunch of built-in web search keywords that sped up your search intents (all customisable of course). Usually two or three letter prefixes, that were terminated by a colon, so you could, f.e. 'ggl: khtml history' (takes you direct to first google 'lucky' result) or 'wp: charles eaton' (search and show wikipedia's top hit for charles eaton), etc.