I'm not what you would call a heavy Twitter user (I've lost weight! Kidding, kidding...), but I do have two accounts I like to check daily. And doing that in my browser is quite the hassle, as it means signing out of one account, signing into the other, and on and on. If I had three, four, or even more accounts, it would really be a nightmare.
Once installed, you perform a one-time setup, entering your Twitter usernames and passwords for up to 10 accounts.
With that done, just click the QuickTweet icon (which gets automatically added to your Chrome address bar), the choose the account you want to access.
What happens next may seem a little weird at first. If you were previously signed into a different account, you'll see that appear, then the generic Twitter home page, then the sign-in page, and finally the account you clicked. In other words, the extension loads Twitter, signs you out, and then signs you into the selected account.
It's a little clunky, yes, but it works, and it does eliminate the usual hassles of manually signing out of and into various Twitter feeds. And if you need to log into a Twitter account via another site, QuickTweet will help you there as well with auto-login options.
This works great for me, but have you found another Twitter account manager you like better? Tell me about it in the comments!