  We present an algorithm for the numeric calculation of antiferromagnetic
resonance frequencies for the non-collinear antiferromagnets of general type.
This algorithm uses general exchange symmetry approach \cite{andrmar} and is
applicable for description of low-energy dynamics of an arbitrary noncollinear
spin structure in weak fields. Algorithm is implemented as a MatLab and C++
program codes, which are available for download. Program codes are tested
against some representative analytically solvable cases.
