Delicious Library is a home library system featuring creation of digital shelves for books, movies, and CDs, support for barcode scanning using an iSight or Bluetooth barcode scanner, automatic downloading of information about the scanned media from Amazon (including similar items, user reviews, etc.), the ability to track items lent to people, the ability to send recommendations about a book to friends, and much more. It features a slick, easy to use interface with high-res downloaded images of the media, making it look almost like a real live bookshelf.
PixSteward downloads pictures and metadata from your Flickr accounts and archives them in a relational database on your computer, allowing offline searches and image exporting. With PixSteward, you can safely back up multiple Flickr photostreams with metadata to your Mac, perform sophisticated searches (even where there's no Internet connection), rapidly browse your picture archive and export original-sized JPEGs, PNGs, and GIFs (groups and one-by-one), export sets of pictures along with their metadata for use in other apps, and edit your Flickr tags, titles, and descriptions simultaneously on Flickr and within PixSteward.
My cOLLection manager is a text-based database program for your collections. It is a fast and easy to use front end for gdbm or Berkeley DB with a curses interface. Some other databases are supported. The program was originally designed to organize a large music CD collection, but it has no restrictions on the entry of any other large range of items. Its main goal is flexibility.
OilCan is a native Universal Binary multithreaded query tool for PostgreSQL. It supports multiple query windows and multiple queries in one window, and includes a basic schema browser. Each query window gets its own connection. All queries run in their own thread, allowing other operations to continue while a long running query is running.
Green Dome GNUstepWeb for Mac OS X provides a WebObjects 4.5-like environment for Mac OS X (with some support for WO5 additions). It is composed of modified versions of the standard GNUstepBaseAdditions, GDL2, and GNUstepWeb frameworks, built to run on top of Apple's Cocoa frameworks. The GNUstep frameworks have been built with Xcode as true Mac OS X frameworks. Thus, they may be used as any other framework under Mac OS X. Note that this is a standalone package that does not require or interoperate with a separate GNUstep installation/environment. It is not intended to provide a complete GNUstep environment, such as would be expected of a full GNUstep installation.