AnimBox includes the Eigen C++ template library for linear algebra
(version 3.4.0), used under the Mozilla Public License Version 2.0 (MPL2).

Eigen is licensed under the MPL2: https://www.mozilla.org/en-US/MPL/2.0/

Eigen source code is available at:
  https://eigen.tuxfamily.org
  https://gitlab.com/libeigen/eigen

Per MPL2 Section 3.2(a), the source code form of the covered software is
available from the URLs above at no charge. AnimBox uses Eigen in unmodified
header-only form inside its WebAssembly modules; no Eigen source files were
modified.