FreeBASIC - FreeBASIC is a completely free, open-source, 32-bit BASIC compiler, with syntax similar to...
Xojo - Real Software and Real Studio are now Xojo.
Liberty BASIC - Easy Programming for Windows XP, Vista, Windows 7, 8 and 10
PowerBASIC - PowerBASIC, formerly Turbo Basic, is the brand of several commercial compilers by PowerBASIC Inc.
KBasic - KBasic is a powerful programming language, which is simply intuitive and easy to learn.
Run BASIC - Run BASIC Personal Server is an all-in-one system that makes web programming easy and fun.