The pairing of high quality with reduced cost seems counter-intuitive at first glance, but makes sense once you look into the open source community more deeply.
Many of the developers and maintainers of open source materials are people who use these materials themselves, and thus have a strong interest in keeping the quality as high as possible.
Description: This open source cataloging tool is designed specifically for sheet music.
It is available for download as Windows and Mac installers, and as source code.
The tool can be set up to operate on a single desktop or use a shared database.