The initiative has been joined by companies such as Seznam.cz, Alza.cz, Keboola, Pale Fire Capital, O2, mluvii, Clevermaps, Cesko.Digital, Liftago, Stories.bi, DataSentics, Dateio, Expertkom, Actum a WMC/Grey. The firms previously helped the state launch a special phone line 1212 that provides information about coronavirus.