Tommygon

As the title says I made a Minecraft server and was trying to join it to test it before I open it up to my friends but for some reason it says that I don't have the same mods as the server. I downloaded each mod to my computer and uploaded them one by one to the server so I'm a little confused as to how I have different mod types then the server. I'm very confused, I even tried using a different version of one of the problem mods and it still says the same problem. I don't know what to do and need some help.