Turbo Pascal also came out in 01983 for 8-bit computers, but "Action!" looks pretty comparable. TP came out in November, though, so maybe "Action!" was earlier.

F83 was also an IDE for 8-bit computers (with multithreading, reflection, macros, a single-stepping debugger, and virtual memory) but despite the name didn't come out until 01984. (It was a model implementation of the Forth-83 standard, thus the misleading name.)

As wduquette pointed out in the previous thread in https://news.ycombinator.com/item?id=45132286, Apple Pascal was an IDE for Apple's 8-bit machines four years earlier. I would add that the UCSD p-System it was based on was available for other 8-bit machines as well, but I don't know what year. But those were bytecode interpreters and so very slow. F83 was intermediate, using indirect-threaded code.

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timbit42 4 days ago | parent [-]

Both Pascal and Action! descended from Algol so there are some similarities.

	▲	kragen 4 days ago \| parent [-]
		I meant that both Turbo Pascal and "Action!" "had (...) integrated into one package: the monitor, compiler, text editor and debugger" and compiled to native code, not that the languages were syntactically similar, although I agree that there is some syntactic similarity, especially if the points of comparison are BASIC, FORTH, and assembly.