MyCadbox

MyCadbox is an online CAD viewer enabling ultra-fast viewing, sharing, markup, and co-viewing of large 3D STEP files on PC and iPad. Model sharing is perfect for team environments as it greatly reduces model opening times within the team. Files and markups are automatically synced between PC and iPad. MyCadbox iPad app is available through Apple free of charge. It can open STEP files from email attachments and from Dropbox.