Web2Py

Web2py is a free open source full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications. Written and programmable in Python. Web2py is created by a community of professionals and University professors in Computer Science and Software Engineering.

Features incude:
- Always backward compatible. We have not broken backward compatibility since version 1.0 in 2007, and we pledge not to break it in the future.
- Easy to run. It requires no installation and no configuration.
- Runs on Windows, Mac, Unix/Linux, Google App Engine, Amazon EC2, and almost any web hosting via Python 2.5/2.6/2.7/pypy, or Java with Jython.
- Runs with Apache, Lighttpd, Cherokee and almost any other web server via CGI, FastCGI, WSGI, mod_proxy, and/or mod_python. It can embed third party WSGI apps and middleware.