5 important computer developments in 1998 By Mjodon Sep 9, 1994 Google Filed for Incorporation in California Mar 1, 1998 MPMan became the first MP3 player released in Japan Mar 9, 1998 Yahoo! Pager was released, and later renamed to Yahoo! Messenger Jun 25, 1998 Microsoft Windows 98 was officially released Sep 3, 1998 Apple introduced the iMac Sep 24, 1998 eBay made its IPO (initial public offering)), and went up 163.2% to close at 47.375.