4Suite is a Python-based toolkit for XML and RDF application development. It features a library of integrated tools for XML processing, implementing open technologies such as DOM, RDF, XSLT, XInclude, XPointer, XLink, XPath, XUpdate, RELAX NG, and XML/SGML Catalogs. Layered upon this is an XML and RDF data repository and server, which supports multiple methods of data access, query, indexing, transformation, rich linking, and rule processing, and provides the data infrastructure of a full database system, including transactions, concurrency, access control, and management tools. It also supports HTTP, RPC, SOAP, and FTP, plus APIs in Python and XSLT.
Agata Report is a cross-platform database reporting tool with graph generation and a query tool like Crystal Reports that allows you to get data from PostgreSQL, MySQL, Oracle, DB2, MS-SQL, Informix, InterBase, Sybase, or Frontbase and export that data as PostScript, plain text, HTML, XML, PDF, or spreadsheet (CSV) formats through its graphical interface. You can also define levels, subtotals, and a grand total for the report, merge the data into a document, generate address labels, or even generate a complete ER-diagram from your database. You can also develop reports using your PHP-GTK interface and then call them using the Agata API from an Apache or IIS-based Web application.
Autoplot is an interactive browser for data on the Web. Give Autoplot a URL or a local file name and it creates a sensible plot of the data. Autoplot allows you to interactively browse data stored in ASCII, .cdf, netcdf, and many other formats. Autoplot was developed under the NASA Virtual Observatories for Heliophysics program in a collaborative effort among several institutions.
BaseX is a light-weight, high-performance, and scalable XML database system and XPath/XQuery processor, including full support for the W3C Update and Full Text extensions. An interactive and user-friendly GUI frontend gives you great insight into large XML data instances. It is platform independent and works out of the box.