Inqlude provides a comprehensive listing of all existing libraries for developers of applications using the Qt toolkit. Inqlude is run by the community and open for contributions.
Support for bookmarks and the XBEL format
KBookmarks lets you access and manipulate bookmarks stored using the XBEL format.
The most common use for bookmarks is web browsers, but this can also be useful in any application where local files or URLs can be saved as bookmarks.