ReactOS yakatanga kuvandudzwa muna Kukadzi 1998 nekugadzira hwaro hweiyo nyowani kernel uye yakakosha madhiraivha. Zita rekuti ReactOS rakagadzirwa panguva yeIRC chat. Nepo izwi rekuti "OS" raimiririra inoshanda sisitimu, izwi rekuti "react" raireva kusagutsikana kweboka ne <unk> uye kupindura kune <unk> monopolistic chinzvimbo cheMicrosoft. Muna 2002 ReactOS yakavambwa muMoscow naMaxim Aleksey Osowski uye vakuru vakuru veAlex Braginovsky savatungamiriri uye Vladimir Braginovsky savatungamiriri. Mubvunzo: Chii chakaitwa nebhodhi reSave ReactOS?
NT itsva kernel uye basic drivers