What fundraising site doesn't charge?

I'm curious to know, are there any fundraising sites out there that operate without charging any fees to users? It seems like a lot of platforms these days have some sort of transaction or service fee associated with them, but I'm wondering if there's a way to raise funds online without having to worry about these additional costs. Can you point me in the direction of any such sites, or perhaps offer some insights into why some fundraising platforms might choose not to charge fees? It would be great to have more options when it comes to raising funds for a cause or project.