Blender (blender.org) is free and runs on Linux... Not entirely sure what you're asking?
Edit: Here's the DOWNLOAD LINK (blender.org)
ah for pete sake, i didn't even think to look at that. I just ASSUMED it was a paid program
No worries. F/OSS is a weird place to get used to if you've spent most of your time on commercial software.
You may find this link useful. (alternativeto.net)
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