### Why web2py?
- **Created by a community of professionals** and University professors in Computer Science and Software Engineering.
- **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, 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.
- **Talks to** SQLite, PostgreSQL, MySQL, MSSQL, FireBird, Oracle, IBM DB2, Informix, Ingres, and Google App Engine.
- **Secure** [[It prevents the most common types of vulnerabilities http://web2py.com/examples/default/security]] including Cross Site Scripting, Injection Flaws, and Malicious File Execution.
- **Enforces good Software Engineering practices** (Model-View-Controller design, Server-side form validation, postbacks) that make the code more readable, scalable, and maintainable.
- **Speaks multiple protocols** HTML/XML, RSS/ATOM, RTF, PDF, JSON, AJAX, XML-RPC, CSV, REST, WIKI, Flash/AMF, and Linked Data (RDF).
- **Includes** a SSL-enabled and streaming-capable web server, a relational database, a web-based integrated development environment and web-based management interface, a Database Abstraction Layer that writes SQL for you in real time, internationalization support, multiple authentication methods, role based access control, an error logging and ticketing system, multiple caching methods for scalability, the jQuery library for AJAX and effects. [[Read more... http://web2py.com/examples/default/what]]