tone indicators carrd.co a free platform for building simple, fully responsive one-page sites for pretty much anything. Category:computers electronics and technology Global Rank:2,896 visits:21.0M pages/Per:3.6 toneindicators.carrd.co what do those slashes and letters mean? Category:grants scholarships and financial aid Global Rank:- visits:310.6K pages/Per:1.4 ADS