You can find a lot of successful trading systems in the internet. It can be manual trading system or automated trading system. Often, the trader, the owner of the successful system, does not want to sell the system and offers to sell signals or offers to manage your account.
How Account Copier can help you
You can request investor password for this system and copy trades to your account using account copier.You also can find a lot of system with investor password on forex forums or monitoring websites. For example Onix-trade
Using this information (account # and password) you can copy trades to your account with account copier software.
You also can subscribe to forex signal service for one account and duplicate trades to several accounts.
Which one account copier better to use
If you want to copy trades to one or several accounts (up to 5-7 accounts) and you would like to copy non scalping strategy, you can use CopyToolPro Account Copier.
If you want to copy trades to more than 7 account or you want to copy scalping strategy (ies), will be better to use PowerTradeCopier Account Copier Software.