QAPlus (1989) 3 Utility Windows

QAPlus is an extensive set of tools to test the functionality of a PC, measure performance, and optimize the configuration. It can test motherboard resources, RAM, video cards, I/O ports, and floppy drives. Later versions supported Microsoft Windows. It competed with tools like Checkit and AMI Diagnostics.

• 6.x

QEMM (1990) 37 Utility DOS Windows

Quarterdeck QEMM is a DOS Extended Memory Manager for 386+ computer which allows you to make use of memory beyond the 640kb barrier. It can also be used with QRAM, a utility for freeing up the 640k base memory.

• 9.x

QuickTime (1996) 5 Video Audio Media Player Windows

QuickTime is Apple's Image, Video and Audio framework. QuickTime is freely redistributable, and is provided here only as a convenience. Some applications on Winworld may require that this software be installed first.

• 2.x
• 4.x