If you have multiple Twitter accounts, then you might be already knowing the difficulty in managing these. Many of the desktop clients for Twitter now supports multiple accounts, but if you are used to web interface for Twitter, then Multwiple is a service you should be trying out. Multwiple allows you to manage multiple twitter accounts from a web based interface. Multwiple has a feature rich interface to manage your accounts.
Multwiple comes with tabbed interface for multiple accounts. You can add accounts using secure OAuth-based Login. There are options to see links retweeted by you and to you. There is also a search functionality to search tweets and also users.
Overall Multwiple is a nice web based Twitter client which can manage multiple Twitter accounts.
Check out Multwiple.