Ask HN: What would be the best project management tool for this use case?

I am running multiple projects at once. Each project needs to go through X amount of stages which must be satisfied before the project can be completed: things like. - Customer is on account type X. - Customer has been sent introduction email - Customer has returned documentation. Once a stage is completed, a box would be checked. I would like to be able to see the projects side by side. Essentially looking for a to-do list which can handle multiple lists on one page. Thanks