Quite a lot actually.
Maya for a lot of stuff (subD modeling, retopo, UVs etc). Zbrush for sculpting. Substance Painter for texturing, Marmostet Toolbag for baking out NRM and AO maps and rendering. Photoshop for customized texture passes and every now and then Keyshot for look dev and quick renders of a high poly model.
+ Unity for a lot of reasons.
