The magic of COOL 3D was its community. Since the official site is dead, look for:
Ulead COOL 3D Production Studio is a dedicated animation tool designed specifically for high-quality video production. Unlike its predecessor, COOL 3D 3.5, the version introduced more advanced modeling tools and enhanced animation capabilities specifically for broadcast-quality output. Ulead COOL 3D Production Studio 1.0.1 Portable
Animation and timing
The portable version lacks modern codecs (h.264). You will need a converter like HandBrake to turn the output AVI into MP4 for modern uploads. The magic of COOL 3D was its community