Web-based paint app DPaint.js

[CharlieJV]

Not strictly connected to QBJS, BAM or other BASICs, but seems the best place to point you to another stunning Web-based application
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This is really nit-picky, but just to make clear:

QBJS and BAM are not "web-based" applications (which sort of implies that an online web browser is required.)

Both are "browser-based" applications.  They can both be used whether offline or online.  They can exist on your local file system or whatever location your web browser can access (thumb drive etc.).