UBASIC

Babbage Difference Engine - Emulator in UBASIC.

DOS Beowulf - Simple, inexpensive Beowulf supercomputing clusters for DOS using UBASIC.

UBASIC - Version 8.8f download from the official site.

UBASIC - Rather-old version (8.74) of this package.

UBASIC Home - Downloads for version 8.8f, help files, bug reports, benchmarks, timings, and links. (Much in Japanese).

UBASIC Programs - Simple examples for use in a Number Theory course.