It is the second operating system in the 9x line, as the successor to Windows 95. Windows 98 is a consumer-oriented operating system developed by Microsoft as part of its Windows 9x family of Microsoft Windows operating systems. Windows 98 at the Wayback Machine (archived October 12, 1999) Second Edition ( A) / May 5, 1999 24 years ago ( ) A screenshot of Windows 98, displaying its desktop, taskbar and channel bar