Answer: Netscape and the Mozilla Foundation, respectively.
Following the ruling against Microsoft in its antitrust case, AOL, Netscape's parent company, sued Microsoft for damages and was awarded $750 million and the right to freely use and distribute Internet Explorer for seven years. On July 15, 2003 Netscape was disbanded while its independent subsidiary the Mozilla Organization launched the Mozilla Foundation, the group that now develops Firefox.*
*This is an extremely abbreviated history of Browser Wars I