Catalogs

Music Collector
Collectorz(Trial version)
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Organize and Catalogue Your Music Collection with Music Collector
CodeX Apps
Codexapps(Trial version)
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The only organizer you'll ever need
MacFamilyTree
Synium Software(Demo)
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Discover your family tree with MacFamilyTree
Books
Books(Free)
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An Open-Source Book Cataloging Application
iMedia Browser
Karelia(Trial version)
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iMedia Browser: Preview all your media
iData
Racoon Bend(Trial version)
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iData: Catalog and Organize Any Kind of Information
Records Master
Thewoodwards(Trial version)
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Records Master: Keep all your important documents in one place
DiskTracker
Portents(Trial version)
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DiskTracker: Keep Track of Your Removable Files and Folders
Nifty Box
Nifty-box(Trial version)
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Tagging without the mess
DiskLibrary
Obviousmatter(Trial version)
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DiskLibrary: Fun and Easy Media Cataloging