Dynamic Form is a Python request abstraction library that lets you write one request handler that will run on multiple Python web frameworks (such as Django and Google's AppEngine). This allows you to create pages and apps once and use them on multiple projects without concern about which framework is being used. Additionally DynamicForm makes AJAX easy. Simply adding nested request classes allows you to define AJAX handlers that can easily be refreshed both sever-side and client-side.

http://www.dynamicform.org/

GUI Builder is A drag and drop interface to create WebElement User Interface (WUI) templates that can be used as the foundation of a responsive wep app. It simplifies the process of designing applications, and encourages separation of the logic and view.

www.guibuilder.net

WebElements is a collection of python objects that enable developers to generate and interact with web apps server side. It encourages object oriented website development, and code reuse by seperating each DOM element into its own object, and then allowing inheritance and child elements to come together to form new elements not defined in the standard DOM.

www.webelements.in

WebBot is a web development toolset that is designed to sit nicely on-top of your existing infrastructure. WebBot is built with a collection of open source tools that together enable building Python web applications the same way native ones are built - and running these applications on top of the leading python web frameworks (such as Django and Google's App Engine). As a result, the WebBot framework encourages reuse, concise code, rapid development, and happy developers.

www.webbot.ws