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True BASIC is a variant of the BASIC programming language, originally written by those who invented it - college professors John G. Kemeny and Thomas E. Kurtz.
This edition was previous distributed free of charge on truebasic.com.
The only limitation is that you cannot edit programs longer than 250 lines - but you can run programs of any length.
True-BaSIC-Free-2-72.sit (668.24 KiB / 684.28 KB)
Stuffit 3.x Archive / compressed w/ Stuffit
Emulating this? It should run fine under: SheepShaver