Currently it is nearly impossible to check what mods are allowed without having to add them to game and trying to connect to a server. I think it would be good if we had a list will all whitelisted client side mods that would be updated when more mods are whitelisted.
i -think- ReAuth and Tabbychat are mostly whitelisted. Not sure though. would require staff confirmation on this.
All the mods that you can download through the MyM Launcher are whitelisted. I also believe if you try to connect with 2 not whitelisted mods it will scream that those 2 mods are not whitelisted
Almost everything except hack mods like xray, fly... If you can't join with a specific mod then we will most likely whitelist it for you.
If you have a clientside mod that you would like to add, please tell us. As long it isn't cheaty, we can add it to the whitelist.