The Crowd4Sat initiative led by Imperative Space has spanned a wide range of subject matter in Earth observation and astronomy, to test the opportunities for using citizen science and crowdsourcing (CS) in relation to data originated from satellite platforms, and to develop new workflows and techniques for rapidly incorporating data into CS platforms and generating useable results. Our particular CS approach focussed predominantly on the use of ‘human pattern recognition’, utilising established image sorting and classification platforms. These platforms have in turn benefited from considerable extension to their functionality as a direct result of the research activity and software development conducted through Crowd4Sat.