zetadb is a python/zope tool that allows a rapid application development of relational database oriented web applications. It generates transladable and user friendly applications to maintain data over the web. It also implements OpenOffice integration
SPWrapper generates java (and now python) classes able to invoke stored procedures and to execute sql statements for you: you just have to give it the stored procedure name or the sql statement.
xbgtk - an xbase/Harbour/xHarbour object-oriented wrapper for using the GTK+ GUI. This project has been deprecated in favour of https://github.com/tuffnatty/hbgi, an approach that uses GObject Introspection for automatic bindings.
The CCC Language is yet another programming language. It is platform-independent, compact, and robust. Supports many SQL engines, has own ISAM DB engine, has terminal mode and more UI-s, is object-oriented, but it is compiled and not interpreted.
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MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
Hornet is a tool to browse and build MySQL databases, with the ability to connect to remote servers. It intends in the future to provide the capability to generate PHP-based interfaces to MySQL databases.
Pyhew is a web framework written in python aiming to ease the web development with python. Based on frameworks like smarty and php2go. Provides a Templating system, forms (with xml for html and validation), url routing and more.