I have a Gmail address with my employer, a personal Gmail address, and a Gmail address for my personal business. My girfriend also has a Gmail address she uses on the same PC. Currently this requires much logging in/out to switch between everything because besides Gmail I use Google Docs, App Engine, and other sites that use the same credentials.
Is there a way to keep all of these accounts open in the same browser at the same time without constantly having to log in/out?
Best Answer
Update: As palms mentioned, this is built into Gmail now.
Below is the original answer for reference...
I believe you have to use a browser extension for that. (Update: As some people have mentioned, this feature is coming soon.)
Firefox Extensions:
I think MultiFox is exactly what you want and the simplest to use. There's a great tutorial on how to use it too.
Chrome Extensions: