REALbasic v1.1.1 has a very small runtime. I think it uses internal compression, because when you stuff a blank app, it barely gets smaller. This was back when they still cared about such things as file size.
http://mikerichardson.name/graveyard/Systaller.sit
This is an old app I made originally in RB v2.1.2 where it was 325K. Then I ported it down to RB v1.1.1 and it shrunk to 164K. The .sit file is 168K.
The programming style is also very modern compared to just about all of the other choices. There's free garbage collection on top of that, so you don't have to worry about memory. It's not suitable for System 6, but I think you could get by on System 7.0.1 with maybe a few extensions like Drag Manager.
Just to sweeten the pot even further - you can use XCMDs and XCFNs in your REALbasic programs! v1.1.1 does not let you Declare into the toolbox though.
Here is my attempt to write a BASIC environment in REALbasic. I think this one is compiled in REALbasic v2.1.2. http://mikerichardson.name/graveyard/SilverBASIC.sit
It includes a "Runtime68K" file. Basically the "compiler" just bundles your BASIC source code with the Runtime program to create a stand alone app. You could use this to make really simple apps if you wanted to.
There's the far more advanced SilverCreator v1.5. The editor is PPC only, but you can deploy the compiled games onto 68K. This is made with at least REALbasic v3.2 so I know you must have at least System 7.5 to run the apps. http://www.silvercreator.net/downloads/SilverCreator1.5PPC.sitx
I still distribute SilverCreator v1.5 because it's the last one that runs on Classic at all. The new v2.0 versions are OS X only.
http://mikerichardson.name/graveyard/Systaller.sit
This is an old app I made originally in RB v2.1.2 where it was 325K. Then I ported it down to RB v1.1.1 and it shrunk to 164K. The .sit file is 168K.
The programming style is also very modern compared to just about all of the other choices. There's free garbage collection on top of that, so you don't have to worry about memory. It's not suitable for System 6, but I think you could get by on System 7.0.1 with maybe a few extensions like Drag Manager.
Just to sweeten the pot even further - you can use XCMDs and XCFNs in your REALbasic programs! v1.1.1 does not let you Declare into the toolbox though.
Here is my attempt to write a BASIC environment in REALbasic. I think this one is compiled in REALbasic v2.1.2. http://mikerichardson.name/graveyard/SilverBASIC.sit
It includes a "Runtime68K" file. Basically the "compiler" just bundles your BASIC source code with the Runtime program to create a stand alone app. You could use this to make really simple apps if you wanted to.
There's the far more advanced SilverCreator v1.5. The editor is PPC only, but you can deploy the compiled games onto 68K. This is made with at least REALbasic v3.2 so I know you must have at least System 7.5 to run the apps. http://www.silvercreator.net/downloads/SilverCreator1.5PPC.sitx
I still distribute SilverCreator v1.5 because it's the last one that runs on Classic at all. The new v2.0 versions are OS X only.