Add to the list: VSTA (visual studio tools for application). C#/VB.net integrated IDE which was meant to run in parallel to VBA (and I think ultimately replace

Add to the list: VSTA (visual studio tools for application). C#/VB.net integrated IDE which was meant to run in parallel to VBA (and I think ultimately replace it). Microsoft Solver Foundation: an abstraction over in house and commercial solvers (Google OR Tools is a neat similar effort by the way)