Berkeley Madonna for Mac

From Robert I. Macey & George F. Oster:

Berkeley Madonna is designed to numerically solve systems of ordinary differential equations as fast as possible. By compiling textual equations into machine code, it achieves execution speeds approaching that of handwritten C or FORTRAN code. Models are quickly constructed thanks to Berkeley Madonna’s easy-to-use equation editor. Or you can use the new flowchart editor to build models graphically. Either way, you’ll spend less time building models and a lot less time running them!