QEMM<p><strong>Quarterdeck Expanded Memory Manager</strong> (<strong>QEMM</strong>) was a <a href="https://en.wikipedia.org/wiki/Memory_management" rel="noopener" target="_blank">memory manager</a> produced by Quarterdeck Office Systems in the late 1980s through late 1990s. It was the most popular memory manager for the <a href="https://en.wikipedia.org/wiki/MS-DOS" rel="noopener" target="_blank">MS-DOS</a> and other <a href="https://en.wikipedia.org/wiki/DOS" rel="noopener" target="_blank">DOS</a> <a href="https://en.wikipedia.org/wiki/Operating_system" rel="noopener" target="_blank">operating systems</a>.</p>