I have released the IP Geolocator extension now also for Firefox. You can find it on the Firefox Add-on page.
Please note:
If you are using NoScript or any similiar add-on you have to whitelist following URLs to make IP Geolocator work for you:
I have released a new Chrome extension:
IP Geolocator shows your IP address and also geolocational informations about your IP address. A badge of your current country is shown on the icon, which will refresh every 3s. So you can easily see, if you have a broken VPN or proxy connection when the country-code changes unexpectedly. Also you can display your position in Google Maps. Please feel free to make some requests at github: https://github.com/AykutCevik/Geolocate-IP-Browser-Extension
Find it on Chrome Web Store.