Red Hat ebipụtala ntọhapụ kwụsiri ike nke ngwugwu Cygwin 3.3.0, nke gụnyere ọbá akwụkwọ DLL maka iṅomi isi Linux API na Windows, nke na-enye gị ohere iji wuo mmemme emepụtara maka Linux na obere mgbanwe. Ngwungwu a gụnyekwara ọkọlọtọ Unix utilities, ngwa nkesa, ndị na-achịkọta, ọba akwụkwọ, na faịlụ nkụnye eji isi mee ka ọ rụọ ọrụ na Windows.