Cereal 0.3 for Mac is free to download from our software library. The application lies within Internet & Network Tools, more precisely RSS Tools.
From the developer:
Cereal is a small RSS reader. I'm writing it because Safari RSS isn't useful and I'm too stingy to pay for one of the shareware readers. Given that, it seems hypocritical to charge for it, so it's free. It's not yet finished, but I find it perfectly usable in its current state.
You may want to check out more software for Mac, such as DietController, which might be similar to Cereal.