App or Website?Crew
Useful micro-site by the fine folk at Crew that helps users decide if their next idea should be built as an app or a website. The interactive One Page website is well thought out and has great usability.
This website has unfortunately been redesigned or gone offline, so I have removed the direct link to it. The screenshot below hopefully preserved enough of the design but if you are really keen to inspect further, try this Archive.org link. FYI: the site was first featured on 07 January 2015.