FreeBASIC

FreeBASIC is a high-level programming language supporting procedural, object-orientated and meta-programming paradigms, with a syntax compatible to Microsoft QuickBASIC.

In fact, the FreeBASIC project originally began as an attempt to create a code-compatible, free alternative to Microsoft QuickBASIC, but it has since grown into a development tool. It can be seen to extend the capabilities of Microsoft QuickBASIC in a number of ways, supporting more data types, language constructs, programming styles, and modern platforms and APIs.