  We present new results on FeynOnium, an ongoing project to develop a general
purpose software toolkit for semi-automatic symbolic calculations in
nonrelativistic Effective Field Theories (EFTs). Building upon FeynCalc, an
existing Mathematica package for symbolic evaluation of Feynman diagrams, we
have created a powerful framework for automatizing calculations in
nonrelativistic EFTs (NREFTs) at tree- and 1-loop level. This is achieved by
exploiting the novel features of FeynCalc that support manipulations of
Cartesian tensors, Pauli matrices and nonstandard loop integrals. Additional
operations that are common in nonrelativistic EFT calculations are implemented
in a dedicated add-on called FeynOnium. While our current focus is on EFTs for
strong interactions of heavy quarks, extensions to other systems that admit a
nonrelativistic EFT description are planned for the future. All our codes are
open-source and publicly available. Furthermore, we provide several example
calculations that demonstrate how FeynOnium can be employed to reproduce known
results from the literature.
