Windows Foursquare

Windows Foursquare is a Windows version that was the successor to Windows Onesquare (released on March 3, 1988). It was released on December 13, 1991, and would be succeeded by Windows Ninesquare on February 4, 1994. It would be supported until December 31, 2001.
== Development ==
Windows Foursquare began development following the release of Windows Onesquare on September 23, 1988. It was codenamed Hippogriff and work began soon enough.
The following builds are confirmed and available:
* 3.00.05 (October 4, 1988)
* 3.00.24 (April 4, 1989)
* 3.00.34 (November 4, 1989)
* 3.00.RC4 (September 15, 1990)
* 3.00.RC5 (September 12, 1991)
* 3.00.35 (November 9, 1991)
Category:Fictional Windows versions