AuthMe
AuthMe is a plugin on RetroMC that requires players to authenticate themselves by typing a register or login command before they can fully interact with the world on the server; however, BetaEVO can be used to bypass that requirement. Despite this, AuthMe is still particularly useful since, due to legacy Minecraft server authentication no longer working due to a domain change made by Mojang awhile ago. One of the consequences of that domain change is that players can easily namesquat other players on any legacy Minecraft server, and so AuthMe acts as a way to protect players from namesquatters getting unauthorized access to their accounts.
Commands list
Player commands
/register <password>(Register yourself on the server)/unregister <password>(Unregister yourself on the server)/login <password>(Login to the server)/logout(Logout of the server)/changepassword <oldpassword> <newpassword>(Change your password)
Staff-only commands
/authme reload(Reload the cache)/authme register <playername> <password>(Register a player)/authme unregister <playername>(Unregister a player)/authme changepassword <playername> <newpassword>(Change password of a player)/authme purge <days>(Delete players from database that haven't logged in for <days> days)