Software for determining symmetry elements and point group of drawn molecules
Coordination compounds / complexes may be a bit tricky in terms of «what do you define as a bond» (covalent / dative bond) and the convention what a stroke between atoms expresses (e.g. in the representation in compounds like ferrocene).  But if you already have a .mol or .pdb file in available, you could try Jmol:

(credit, includes some details how to use the program this way)
While the example is about methane as a simple organic molecule, Jmol is well capable to interact with crystal structure models, and displaying symmetries of the unit cell, too:

(credit, Hanson, J. Appl. Cryst. 43, 2010, 1250-1260 [open access])
including interactive galleries like Symmetry@Otterbein both about molecular and crystal symmetries.