You could have downloaded Cellulo 2.0.2 for Mac from our application library for free. The most popular version of Cellulo for Mac is 2.0. This app's bundle is identified as fr.atvaark.cellulo. Cellulo for Mac is included in Audio & Video Tools. The actual developer of this free software for Mac is Atvaark Development.
From the developer:
Cellulo is based on QuickTime which is an essential part of the Mac OS X technologies, and nothing less than today's most powerful multimedia architecture. Therefore, Cellulo inherits from QuickTime's reliability, speed and versatility. As a result, you can open a wide range of files such as MPEG-1, MPEG-21, MPEG-4, DivX1, XVid1, QuickTime, H.264, DV, Flash, BMP, TIFF, PDF, MP3, AAC... And as QuickTime evolves, Cellulo does!
You may want to check out more Mac applications, such as Melody Player, 33 RPM or Sweet MIDI Player, which might be related to Cellulo.