SolverCAD allows you to solve any set of simultaneous equations, linear or nonlinear. The minimal example loaded here solves some equations related to a box. Press the SOLVE AND GENERATE CODE button below to solve it. If you want to reload it, just select the box_easy.scin file from the dropdown below. To see more SolverCAD options with that same model, load the box_complete.scin file. You can load a number of prebuilt problems this way, create your own, and save them back to the library. Your equations can include Python functions which you type the LocalFunctions field. When you are satisfied with a solution you can "drive it" using Optimization or DesignofExperiments.
NOTE: This is an alpha version of SolverCAD. It is feature complete but has not been tested in a real-world environment. It is likely to have bugs and usability problems. We welcome feedback!