Kivy is a Python framework for creating NUI (Natural User Interface) applications.

Kivy works on Linux, Android, MacOSX and Windows, and offers a flexible solution for creating complex touch applications (see awesome demos).

The code written with Kivy is lean and neat, and, altogether, the framework’s approach to designing next-gen applications is nothing short of impressive.

• Website: http://kivy.org/
• Demo: http://kivy.org/#gallery

Satchless is an e-commerce framework built on top of Python and Django.

Satchless is built upon the very idea that there is no “one size fits all”, and that “a good framework should give you just the right tools to prototype, test and build an efficient solution that suits you and your business.”

The coding is module-based, and the documentation helps you set up the first modules (cart, catalog, etc.).

• Website: http://satchless.com/

Pump is a Python Abstraction for HTTP that can be used instead of WSGI (wiz-gee).

Pump presents itself as “what WSGI should’ve been”. In its core, Pump is meant to ease making web applications with Python.

You can use Pump for creating your own framework, or, alternatively, you can use Picasso as either your framework or the base for one.

• Website: http://adeel.github.com/pump/

HTML Lint is a tool that makes sure your code looks good.

While XHTML was very strict with syntax HTML 5 is more lenient like previous versions of HTML, which means keeping consistent code styles will become more difficult. Validating is not good enough anymore.

Lint is written in Python and the webapp is based on Django.

• Website: http://lint.brihten.com/html/help

Bottle is a fast, simple and lightweight WSGI micro web-framework for Python. It is distributed as a single file module and has no dependencies other than the Python Standard Library.

• Routing: Requests to function-call mapping with support for clean and dynamic URLs.
• Templates: Fast and pythonic built-in template engine and support for mako, jinja2 and cheetah templates.
• Utilities: Convenient access to form data, file uploads, cookies, headers and other HTTP related metadata.
• Server: Built-in HTTP development server and support for paste, fapws3, bjoern, Google App Engine, cherrypy or any other WSGI capable HTTP server.

• Website: http://bottlepy.org/docs/dev/index.html

Django Fiber is a rather interesting CMS that runs on Django.

Fiber’s trump card is the front-end administration. Its implementation is surely something you don’t see every day.

Fiber allows reusing content with ease; editing content in-line; and accessing the admin panel from every page so you can actually edit the content from the front end.

What you’ll like about Django Fiber:

• Allows reusing content easily and in vast quantities.
• It’s really user-friendly (at least after the install).
• Innovative front-end administration.
• A logical and comprehensive template structure.
• Great for static-page websites like blogs and portfolios.

What you won’t like:

• No existing templates/plugins — after you install Fiber, it’s almost pure DIY.
• Complex websites are potentially hard to create with Fiber.

• Website: http://ridethepony.org/