[bar94]

How does Maxima compare to something like Xcas[1]?

[1]: https://www-fourier.ujf-grenoble.fr/~parisse/giac.html

[bloaf]

https://www.12000.org/my_notes/CAS_integration_tests/reports...

Giac/Xcas is slightly worse at symbolic integration than Maxima, and both are dramatically worse than Mathematica.

FriCAS, an Axiom fork, is the best open source CAS on those benchmarks.