by Wendy Lou
There are many tools you can use to monitor Twitter, but my personal favorite is TweetDeck. With it's super-organizable column structure, you can follow lists, search terms, activity, notifications, and more. Regardless of whether you log in on the desktop app, on the web, or the Chrome app, all your customization is saved.
While you can monitor multiple accounts, you'll want to be careful not to tweet from the wrong account. To avoid this, I suggest logging in for each individual account you run.