COBOL: Probably the first language that looked "human readable". Invented with "business" in mind, ie, banks, corporations, etc. Still in use at many financial places as their installations are huge and would be expensive to replace/rewrite. COBOL programmers are very hard to find and very expensive.
Fortran: Developed at IBM in the 1950s, still incredibly popular today for economics calculations, math, finance, etc. Popular in academia for this reason.