▁an ▁e - mail ▁client , ▁a ▁news ▁client , ▁a ▁feed ▁aggreg ator , ▁to - do ▁lists , ▁etc . ▁ ▁Kon quer or ▁– ▁Web ▁browser ▁and ▁File ▁manager ▁ ▁Kop ete ▁– ▁Inst ant ▁mess aging ▁client ▁ ▁K R DC ▁– ▁a ▁remote ▁desktop ▁client . ▁Both ▁the ▁Virtual ▁Network ▁Comput ing ▁( V NC ) ▁and ▁Rem ote ▁Des ktop ▁Pro tocol ▁( R DP ) ▁protocol s ▁are ▁supported , ▁so ▁Unix - like ▁and ▁Windows ▁PC ▁can ▁be ▁accessed ▁using ▁this ▁software . ▁As ▁part ▁of ▁the ▁G So C , ▁project ▁developers ▁helped ▁make ▁Lib v nc server ▁compile ▁on ▁Windows ▁platforms , ▁allowing ▁for ▁a ▁port ▁to ▁Windows . For ▁more ▁applications , ▁see ▁list ▁of ▁K DE ▁applications . '' ▁ ▁Lic ens ing ▁ ▁In ▁November ▁ 1 9 9 8 , ▁the ▁Qt ▁framework ▁was ▁dual - lic ensed ▁under ▁the ▁free ▁and ▁open - source ▁Q ▁Public ▁License ▁( Q PL ) ▁and ▁a ▁commercial ▁license ▁for ▁propriet ary ▁software ▁developers . ▁The ▁same ▁year , ▁the ▁K DE ▁Free ▁Qt ▁foundation ▁was ▁created ▁which ▁guarante es ▁that ▁Qt ▁would ▁fall ▁under ▁a ▁variant ▁of ▁the ▁very ▁liberal ▁B SD ▁license ▁should ▁T roll tech ▁ce ase ▁to ▁exist ▁or ▁no ▁free ▁version ▁of ▁Qt ▁be ▁released ▁during ▁ 1 2 ▁months . ▁ ▁Deb ate ▁continued ▁about ▁compatibility ▁with ▁the ▁GNU ▁General ▁Public ▁License ▁( G PL ), ▁hence ▁in ▁September ▁ 2 0 0 0 ▁T roll