This software does symbolic maths, and it's commercially licensed. The site still seems to be lacking comparisons to other computer algebra systems.
The project is unrelated to this other Symbolica that does symbolic code execution, despite the similar sounding brief descriptions: https://news.ycombinator.com/item?id=28443587
Benchmarks against Symbolica and numerica here: https://github.com/timschmidt/hyperlattice/blob/main/benchma...
Builder patterns for constructing replacement rules (and now evaluators!), macros for namespacing symbols, and now the call trait to fill in for callables in rust.
Not to mention the broad implementation of arithmetic on Atoms (the expression type of symbolica) with other std types and with symbols.