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imgSeek is a photo collection manager and viewer with content-based search and many other features. The query is expressed either as a rough sketch painted by the user or as another image you supply (or an image in your collection).
PyTablet is a self organizing DB for semi-structured data. PyTablet behave like a huge persistable dictionary where keys are ID and values are dictionary-like objects that can link each other and contain simple values.
lylina is a river-of-news style web-based RSS/Atom feed aggregator loosely based on it's predicessor, lilina. It features a dynamic multi-user system and a scalable database backend, providing the best way to get all your news in one place.
Each user can run their own threaded search engine and contribute to a global search database searching only the sites they want. It is built using Turbogears.
...Pony ORM also include the ER Diagram Editor which is a great tool for prototyping. You can create your ER diagram online at https://editor.ponyorm.com, generate the database schema based on the diagram and start working with the database using declarative queries in seconds.
The Flamenco search and browse interface framework uses hierarchical faceted metadata to allow users to both refine and expand queries, while maintaining a consistent representation of a collection and seamlessly integrating keyword queries.
MVCPython is a framework which automatically generates a MVC architecture (MVC= Model View Controller) just from Python Classes and Object defintions. MVCPython achieves this through a strong use of Python's introspection capability.
Kura is a complete, professional system for the handling of linguistic data, especially fieldwork data from small-corpus languages. It allows users to enter texts in any language and analyze those texts
Fasafiso is a blogging system written in PHP using a MySQL database backend. It supports multi-user blogging, themes, multilanguage, a Blogger-like API to post entries remotely, commenting on posts, rss and atom feeds.
db_flay generates a simple, productive web interface for Postgresql databases. The target user is a secretary. db_flay lets users view, edit, copy, and delete data in multiple databases. A Plone-integrated version, plonedbflay, is also available.
Yabman is a tool for managing bibliographic references. Its key features are a quality user interface, a carefully designed data model, and sophisticated three-state hierarchical reference labeling. It is currently usable but in a pre-alpha stage.
XSDB XML is to DATA as HTML is to DOCUMENT. Publish and combine data as easily as HTML format and web browsers publish and view documents. Implementations in Python, javascript, java, C#/.NET.
Xenue is a Xen kernel plus a linux domain0 environment, with web based tools to configure and manage your hardware and virtual machines. It boots from the flash area of pc or from usb thumb disk as the pre environment before any service os boots.
FGL is a tightly-integrated self-contained development & execution environment utilizing best-of-breed programming tools and methodologies, optimized web/application server, highly-scalable relational/object database, and robust extension interface.
Banyan is an enterprise class, web based, information management system that helps people work collaboratively to solve complex problems. Banyan increases project performance and reduces risk through the power of collaborative clear thinking.
ProcessViewBrowser & ProcessViewServer represent an OpenSource attempt to industrial process visualization. It is based on Qt and is very portable. (Now also available as commercial software)
This tool generates Data Access Objects and Value Objects for PHP4/MySQL web applications. This greatly improves the readability of PHP scripts that use a MySQL database. Requires Python.
``Modeling'': an Object-Relational Bridge for python.
Please note: this project is not maintained anymore.
Make your objects persistent in a RDBMS, just by designing how your classes map to an RDBMS schema, without having to write a single line of SQL!