SheepIt Render Farm Reviews

Summary: I found it to be very pleasing to donate to art, it's a great thing that every blender user should use, and something anybody can contribute to.

Positive: Sheepit is completely free, and far faster than any other product like Google Colab. The aspect of teams is very fun and addicting, and it seems to be completely safe.

Negative: There were some issues I experienced in my renders with GPU rendering, where different processors would not always create the same result.

Summary: I believe SheepIT is the best free render farm. You have to render other users' frames to render your own, but it's a fair system. It's a good way to speed up your rendering and help other users.

Positive: You get more than you give with SheepIt. This service requires you to render other users' projects to gain points, which you can use to render your own projects. For every frame you render, you get enough points to render approximately 4 frames of your own.
I've had 20+ users rendering my project at once, and it was about 30x faster than rendering on my PC. No complaints about the rendering speed.
The render client supports CPUs and NVIDIA GPUs.
And it's free!

Negative: Sometimes, a frame can take an extremely long time to render. It's not too much of an issue with large projects, though.
It's not suitable for projects you must keep private, because people who render your project can see thumbnails of the frames they rendered.
At the time of writing, SheepIT does not support AMD or Apple graphics.