January 1998 aivawo mwedzi kuti Netscape akatanga rakavhurika mabviro Mozilla chirongwa. Netscape pachena akasunungura mabviro romutemo Netscape Communicator 4.0 netariro kuti aizova yakakurumbira rakavhurika mabviro chirongwa. It akaisa bumbiro iri pasi Netscape Public License, izvo zvakafanana GNU General Public License asi akabvumira Netscape kuramba kubudisa proprietary basa rine pachena akasunungura bumbiro. Zvisinei, pashure kusunungura Communicator 4.0 bumbiro iyi nzira, Netscape mberi kushanda Communicator 4.5 iyo raiva nezvezvandaifanira kuvandudza email uye zvebhizimisi functionality. Pakupedzisira zvakava pachena kuti Communicator 4.0 Browser yakanga yakaoma zvikuru kukudziridza, uye rakavhurika mabviro kukura kwakamiswa pamusoro codebase ichi. pachinzvimbo, rakavhurika kukura vakachinjira rinotevera-chizvarwa Browser yakavakwa kubva muvare.
Netscape