They're conventionally referred to generically as IDC (Insulation Displacement Connector). The pitch is 0.1" (2.54mm) in both directions. The special version with every other position grounded for 80 conductor ATA cables is special/application specific and you can probably find it as an "ATA connector".
They're available from several vendors. Check 3M, TE/AMP, Molex, FCI, etc.
The laptop version is 2mm pitch.