zlcatalog is a C library that can be used to organize information in a non-hierarchical way. It features an XML file structure, elements that can belong to multiple groups, groups that can be sorted by name or date, and an API that provides easy methods of bulding groups from directories, adding/removing groups, adding/removing elements, etc.
|Tags||Software Development Libraries|
|Operating Systems||POSIX Linux|
Release Notes: Group elements track when they are modified and accessed (and can be sorted by such), other minor functionality, and bugfixes.