I've written Mac character generation applications for Classic Traveller. Book 4: Mercenary, Book 5: High Guard (Second Edition), Book 6: Scouts, Book 7: Merchant Prince and Supplement 04: Citizens of the Imperium (including the Book 1 careers). These are older 32 bit apps, so you'll need an older version of Mac OS to run them these days.
I've written iOS apps, TAS Form 2 and Orbital Yards, for Classic Traveller and ArmorMaker, GunMaker, VehicleMaker, Citizens of the Imperium, Adventure Class Ships, and SectorMaker for Traveller5. I occasionally update these as I get around to it.
If you want copies, go to my website for the Mac apps or the App Store for the iOS apps. Completely free, of course.
In the interest of plausible deniability, everything else I want to say about myself can be found in my profile: agorski, or in RPG Geek of the Week #66: Art Gorski (agorski).