We currently list about 20 packages that use SymPy on the front page. However, GitHub says there are 12,244 packages that use SymPy:

https://github.com/sympy/sympy/network/dependents?package_id=UGFja2FnZS01MjYzNzYzNg%3D%3D

@asmeurer should we add this link to the front page?