If you are looking for specific 2015 tools, these were the highlights of that year's 3D animation software:
: Students and educators can access free software through the Autodesk Education Plan , though availability for the 2015 version is unlikely due to its age. autodesk-mbx-2015-64bit-free-download
How do I download Maya 2015 while having Maya 2018 on my PC? If you are looking for specific 2015 tools,