FreeBASIC is a completely free, open-source, multi-platform BASIC compiler, with syntax similar to MS-QuickBASIC, that adds new features such as pointers, object orientation, unsigned data types, inline assembly, and many others.

MyFbFramework https://www.freebasic.net/forum/viewtopic.php?t=28397 https://www.freebasic.net/

VisualFBEditor https://www.freebasic.net/forum/viewtopic.php?t=27284 https://www.freebasic.net/

MDIScintillaControl

Visual FreeBasic Editor Bass example