I have some vegetarian cookbooks that have recipes asking for heavy
cream. Few stores around here actually even have heavy cream (they
mostly have whipping cream). But the ones that do only have one brand
and it contains gelatin. Gelatin doesn't sound very
vegetarian-friendly. Are there other brands of heavy cream that don't
use gelatin?

I ended up buying "heavy whipping cream" instead. The ingredients
looked similar to "heavy cream" except it had no gelatin. But it did
have milk which I think would probably make it less heavy than heavy
cream.