Esta página mostra a melhor ferramenta responsive design na extensão do Chrome e a ferramenta responsive design gratuita na extensão do Chrome.
As melhores extensões do Chrome para responsive design são: Troy, Pinegrow Web Designer, Mobile View: Test responsive designs fast, Chameleon, I love adaptive – Mobile/Responsive testing, Viewler, Cornpare, DevTools: U.S. Web Design System (USWDS), S.I.D - Simulation in Devices, Emmet Re:view.