What is best twitter accounts management software ?

I want to manage multiple twitter accounts(50) at the same time
i want them to RT same tweet, like same tweet, post same tweet, etc. (but at different time if possible)

i also want to use proxies for my accounts
would be also nice to be able to change infos about accounts in the software (like modify username, name, background, avatar, follows, etc…)

any idea ? I heard FollowLiker but i dont know if it can handle all the things i just wrote