• Scientific Computing includes Chemistry and Biology.

• Some projects are in inappropriate categories.

For example, fftw in Scientific Computing should be in Math, because Fourier Transformation is a math problem and its application is not only in scientific computing. It would be more "Mathematical" than QuantLib in Math.

• What about graph computing frameworks and libraries, solving problems like broad-first search, single-sourcce shortest path, etc.? They are combinatorial math solver, but not like the numeric solvers in Math.