1980s Microsoft Lisp was just reselling Soft Warehouse muLISP, minus the compiler. In 1999, Soft Warehouse was purchased by Texas Instruments. Microsoft also resold their computer algebra system, muMATH which was built on top of muSIMP (muLISP with an Algol-like syntax)
MS Fortran, by contrast, I believe was always an in-house Microsoft-developed product. So originally was Microsoft COBOL versions 1 and 2, but version 3 onwards was rebadged MicroFocus COBOL
1980s Microsoft Lisp was just reselling Soft Warehouse muLISP, minus the compiler. In 1999, Soft Warehouse was purchased by Texas Instruments. Microsoft also resold their computer algebra system, muMATH which was built on top of muSIMP (muLISP with an Algol-like syntax)
MS Fortran, by contrast, I believe was always an in-house Microsoft-developed product. So originally was Microsoft COBOL versions 1 and 2, but version 3 onwards was rebadged MicroFocus COBOL