Squarebase is a Web-based interface for MySQL databases. The basic idea is that it builds a database (called the "metabase") that describes the structure of the database. The information in the metabase is used to format lists and forms for browsing and editing the contents of the database.
Monotone browser (mtn-browse) is an application for browsing Monotone VCS databases without the need of a workspace. The interface allows one to easily select a revision from within a branch, find a revision using complex queries, navigate the contents of a revision using a built-in file manager, display file contents (either using the internal viewer or an external helper application), graph revision histories, compare the changes between different revisions or versions of a file (either using the internal difference viewer or an external application), find files within a revision based on detailed search criteria, display file annotations and easily refer back to the corresponding change documentation, and save files to disk.
Zero RRD Framework provides a central HTTP-based service for importing into standard RRD databases and for generating graphs. A lightweight, easily extendable agent for the data sources pushes updates with minimal resource consumption to the master service using HTTP. With the introduction of VMs for the service, it's easy to test-drive the application and even the architecture (connecting agents to the service in the VM).
Wabit is an easy-to-use, all-in-1 business intelligence reporting and analysis tool. It offers database and business users the ability to perform ad-hoc queries, generate standard reports, and more. It includes features such as a drag and drop playpen, live result-set updates, global searching, and WYSIWYG report formatting. With a single mouse click, query results can be instantly transformed into elegant reports that can be further customized with fonts, colors, sections, breaks, headers, footers, logos, and more. Wabit has support for standard reports and custom dashboards, ad-hoc queries and drill-down OLAP cubes, line, bar, and pie charts, real-time BI reporting, report scheduling/bursting (Enterprise edition), fine-grained security (Enterprise edition), thin-client Web access (Enterprise edition), an and an easy-to-use drag and drop interface (no SQL knowledge required).
Sqlkit provides a GUI named sqledit to edit data in a database, as well as a package (sqlkit) in PyGtk. Sqledit (the application) can be run from the command line with arguments and will pop directly into the table/mask of the data, or without arguments and will present an input mask to write the database URL. Sqlkit (the Python package) provides SqlMask and SqlTable, two widgets for editing database data. It is meant to be used as a base for database desktop applications.
odbcpp is an ODBC C++ library wrapper. The ODBC library itself is a low level C library that has many functions, all of which could return errors. This wrapper checks for errors on every single call to the ODBC interface, so if an SQL statement, a connection, or anything else fails, an exception is generated.