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FutureBASIC is a complete Basic integrated developement environment (IDE) in which you can write Basic scripts, run, debug and compile to fully standalone Macintosh applications.
Compiled applications are very small in size, compared to ones created with other Basic IDE such as RealBasic. FutureBASIC does not include visual tools, but has a very complete syntax documentation guide with short code examples for each keywords.
FutureBASIC.sit (472.2 KiB / 483.54 KB)
FutureBASIC v1.0.1 / compressed w/ Stuffit
System 6 - Mac OS 9.2.2
At least 750KB of free RAM (recommended 2MB but it all depends on applications you want to develop inside of it)
Emulating this? It should run fine under: Basilisk II