I've got two work email accounts from different companies, both running on separate domains on Google Apps for business so they are using Gmail  infrastructure. At the moment I'm managing them using Mac Mail which is ok, but I'd like to move to use the Gmail in the browser to view / manage / compose emails.In Mac Mail I can switch between my two accounts like this: Is there something similar inside of Gmail that I can set up?
Managing multiple account from Gmail
gmail;email;google apps;google apps email
What I do is this:I set up the ability to send from many e-mail accounts.I forward the other accounts to my gmail account.I set up label filters for those accounts.I select the label to view mail from other accounts.