Clipper 5.3 is a database management system developed by Nantucket Corporation, which was later acquired by Borland. It was released in 1997 and was known for its xBase compatibility, offering a robust database engine with a programming language similar to dBase.
Use VirtualBox or VMware to install MS-DOS 6.22 or FreeDOS, then copy Clipper 5.3 into the VM. This is more work but offers better file sharing with the host OS. clipper 5.3 download
Before you go on a wild chase for Clipper 5.3, consider this: Clipper 5
This is technically abandonware. While copyright likely still exists, the rights holder has shown no interest in enforcing it for 30-year-old DOS compilers. Use at your discretion. clipper 5.3 download