C and C++ for the vast majority. Some Ada. Some Fortran, but probably only in physical modules (LRUs) that are being reused (COTS or GOTS) from other projects.<p><a href="http:&#x2F;&#x2F;www.militaryaerospace.com&#x2F;articles&#x2F;2013&#x2F;10&#x2F;software-code-f-35.html" rel="nofollow">http:&#x2F;&#x2F;www.militaryaerospace.com&#x2F;articles&#x2F;2013&#x2F;10&#x2F;software-c...</a> -- but a Google search reveals much the same from any article I can find, and just reiterates what I&#x27;ve read in past articles on F-35 software.