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Have you tried this one ? http://norme-azerty.fr/en/
That looks like an "AZERTY International", with no advantage over the Portuguese layout for programming, and no advantage over "US International" for typing languages other than French. It does look like an improvement over traditional AZERTY! My choice is "US International with AltGr deadkeys". The deadkey behaviour in simple "US International" is very annoying for programming: you have to double-tap every key that…
Uh, did you not even bother to click on the link or something ??
The easy access to all Greek characters (and more math symbols) alone is great if you work in a math-related field !