I've been using this extension for quite a long time and have to say that this one rocks! I've almost forgot my passwords for all of my Google accounts (which is not actually an advantage, i guess) as i have this extension installed on my Google Chrome
I have around 8 Google accounts for a variety of purposes and i was finding this very time consuming to type in all the details whenever i have to login OR to switch between my Google accounts. Now, with this extension, i can just click any of the names, and it just takes me directly into my account. I can also switch between my Google accounts by just logging out in which the extension opens up the configured accounts, and a click again takes me in to the desired account.
Moreover, if i landed upon any of the google login pages, it shows up the assistant automatically. Currently, this extension supports up to 10 accounts and i would like to keep it in posts so that others can find and use it. And hey.. it works with Google Apps Accounts too. Enjoy!
This extension is available here
https://chrome.google.com/webstore/detail/cbgngpehipfmfmpjmhonhacgbkjpdidp
The Facebook page for this extension is at
http://www.facebook.com/quick.access.gaccounts
