This is the homepage of the Chrome User-Agent Selector extension.
The extension allows you to modify on a per-tab basis the User-Agent HTTP header sent by Chrome in order to mimic other browsers. You can also add, edit, export and import your own user-agents.
Please note that it currently requires a Chrome 17.x version, available in the Beta Channel : http://www.chromium.org/getting-involved/dev-channel
Chrome User-Agent Selector 
Jan 08, 2012 @ 14:36:28
I’m not able to download from chrome store. Its always showing error:
“An error has occurred. There was a problem adding the item to Chrome. Please refresh the page and try again.”
But all other extensions installing fine. Plz send me direct link.
Jan 08, 2012 @ 16:20:01
Hi
As mentionned, this extension will only install under Chrome version 17.x, this will be the next stable version.
Chrome 17.x is currently in the Beta Channel, available here : http://dev.chromium.org/getting-involved/dev-channel
Jan 17, 2012 @ 16:23:50
Same problem here. waiting for your update
Jan 17, 2012 @ 17:33:24
Hi Ouriel
As written in the web store description, this will not install under Chrome version 16, which is the current version.
It will only install under Chrome version 17, which is the current beta version.
You can find Chrome 17 under the Beta channel here : http://dev.chromium.org/getting-involved/dev-channel
Jan 26, 2012 @ 16:07:11
I have 17.0.963.44 from the beta channel. Doesn’t seem to matter what I select as the User-Agent, the mobile sites I’m testing, as well as several web-based browser sniffers still see me as Chrome on a Win7 machine. Has anyone else reported this to you? Think it’s worth trying the dev channel build?
Jan 26, 2012 @ 17:10:15
Hi Darryl
Works for me with beta 17.0.963.44 on a Mac, I also did an uninstall/reinstall of the extension and it works too.
The dev channel build should not differ.
Do you have another installed extension manipulating http headers ?
Jan 26, 2012 @ 18:42:53
Seems to be the method in which the site detects the browser. It appears sites like this one (http://detectmobilebrowsers.com/mobile) use the User-Agent (and your extension works great). Other sites (like this one for example http://jsbrwsniff.sourceforge.net/demo.html) use a variety of JavaScript methods to determine browser capability, and those detect the original version of the Chrome on my desktop.
I think it’s still an excellent extension and will be very useful for development work I’m doing on our own sites, and for that I thank you!
Mar 07, 2012 @ 10:41:12
For some reason in chrome18.0.1025.45 beta-m, when you change the user agent in a tab it will automatically change it in all the other tabs pointing to the same domain!