Condensed in a single ~65KB file, F3 (as we fondly call it) gives you solid foundation, a mature code base, and a no-nonsense approach to writing Web applications. Under the hood is an easy-to-use Web development tool kit, a high-performance URL routing and cache engine, built-in code highlighting, and support for multilingual applications. It's lightweight, easy-to-use, and fast. Most of all, it doesn't get in your way. F3 supports both SQL and NoSQL databases off-the-shelf: MySQL, SQLite, MSSQL/Sybase, PostgreSQL, DB2, and MongoDB. It also comes with powerful object-relational mappers for data abstraction and modeling that are just as lightweight as the framework. No configuration needed.