Personally I think that this project has a very important mission and there is no similar projects yet. At least I havent seen them
I met a project that was going to work in the field of ecology, but Greencoin seems to me the most ambitious.
It is very difficult to find a project that will really be interested in helping the environment, most of all it is interesting for them to make money
But in any case, this platform should collect in itself new projects that both want to make money and of course help people in ecology.