BruhezMomento

I'm a plugin developer for an mmo-rpg server, and I need a server to test my plugins in with other server staff. I don't want to have to pay for a server, since it would be temporary, and I don't want to portforward. It doesn't look like this server hosting service has the ability to add custom plugins, but if it does, would someone point me to a forums post or something to help me out? If the hosting service doesn't, I'd appreciate it if someone would point me towards a server hosting site that is free and allows custom plugins.