RDQS (Ruby Data Query Shell) is a text-based shell for querying SQL databases. It features connection bookmarks, shortcuts, history, completion, paging, shell interaction (via backtick operator), CSV/INI/XML/Table output, output redirection, numerous configuration options, multiconnect with fast switching, and a watch command (execute given query/shortcut in a fixed interval).
db-backed is a Ruby library providing a convenient mechanism for describing objects bound to a backing database. This relieves the programmer from much of the tedium associated with writing programs with DB access. Instead of spending a lot of time working on code that reads data from the database, code that stuffs it into useable objects, remembering whether a particular piece of data lives in the database or not, etc., db-backed allows the programmer to simply design their database schema (with a few constraints), and write a very simple class definition which describes the mapping between database fields, class methods, and foreign key mappings.
rtkmerge is a GUI to the emerge command to handle packages under the Gentoo Linux Distrubution. It was initially written to help when running 'emerge world' to update the entire system. With rtkmerge you get all the outdated packages presented in a list and you can easily select which packages you want and don't want. USE-flags can be set individually for each package.
Berkeley DB XML is a native XML database engine for use within your product. Made available as a C++ library with language bindings for Java, Perl, Python, PHP, and Tcl, it integrates directly into your application (it is not a standalone database server). It provides XQuery access into a database of document containers. XML documents are stored and indexed in their native format using Berkeley DB as the transactional database engine.
Alexandria is a GNOME application to help manage a book collection. It retrieves book information (including cover pictures) from several online libraries, allows you to search for a book (either by EAN/ISBN, title, authors, or keyword), can import and export data into ONIX, Tellico, and EAN/ISBN-list formats, generates Web pages from your libraries, allows marking your books as loaned, saves data using the YAML format, features an HIG-compliant user interface, shows books in different views that can be filtered or sorted, and handles book rating and notes.
Active Record connects business objects and database tables to create a persistable domain model where logic and data is presented in one wrapping. It’s an implementation of the object-relational mapping (ORM) pattern in which an object that wraps a row in a database table or view, encapsulates the database access, and adds domain logic on that data.