Then Microsoft began shipping Internet Explorer with their Windows operating system. Within 4 years, it had 75%% of the market and by 1999 it had 99%% of the market. The company faced antitrust litigation over the move, and Netscape decided to open source its codebase and created the not-for-profit <a href="%(mozilla)s">Mozilla</a>, which went on to create and release Firefox in 2002. Realizing that having a browser monopoly wasn’t in the best interests of users and the open web, Firefox was created to provide choice for web users. By 2010, Mozilla Firefox and others had <a href="%(marketshare)s">reduced Internet Explorer’s market share to 50%%</a>.
Yna cychwynnodd Microsoft ddarparu Internet Explorer gyda'u system weithredu Windows. O fewn 4 blynedd, roedd ganddo 75 %% o'r farchnad ac erbyn 1999 99 %% o'r farchnad. Roedd y cwmni'n wynebu ymgyfreitha gwrth-ymddiriedaeth oherwydd y weithred, a phenderfynodd Netscape agor eu cod ffynhonnell a chreu y corff dim-er-elw <a href="%(mozilla)s">Mozilla</a>, a aeth ymlaen i greu a rhyddhau Firefox yn 2002. Gan sylweddoli nad oedd cael monopoli porwr er lles defnyddwyr a'r we agored, crëwyd Firefox i roi dewis i ddefnyddwyr y we. Erbyn 2010, roedd gan Mozilla Firefox ac eraill <a href="%(marketshare)s">wedi lleihau cyfran marchnad Internet Explorer i 50 %%</a>.