Minecraft 1.6.2 Account Manager mod??

Is there any minecraft mods to change between minecraft account, like on some hacked clients.

If there is any mods like this I would like to know the name of it and if it's with Modloader or Forge

Thank you!

These are some hacked clients that have ALT account tabs that let you switch i do belive Nodus is one of them but i cannot be 100% sure.

There is bound to be a thread like this sooner or later on any devoted MC forum, and the answer is no.
There are no up-to-date account manager mods for Minecraft, your only option is to use a client if you want the account manager that badly.