SRWare Iron is a browser which is developed based on the free Source code "Chromium" which is used in Google chrome too. SRWare claims that they are using the latest version of Rendering-Engine WebKit version 530.9 while Chrome uses 530.5.
It does not have the calls made to Google from Chrome. see the list below from the website
Client-ID -Chrome creates a unique ID through which a user can be theoretically identified.
Timestamp -Chrome remembers up to the second exactly when the software was installed.
Suggest - Depending on the configuration, each time you put something in the address line,this information is sent to Google to provide suggestions.
Alternate Error Pages - Depending on the configuration, if you have typed a false address in the adress bar, this is sent to Google and you get an error message from Google's servers.
Error Reporting - Depending on the configuration, details about crashes or failures are sent Google's servers.
RLZ-Tracking - This Chrome-function transmits information in encoded form to Google, for example, when and where Chrome has been downloaded.
Google Updater -Chrome installs a updater, which loads at every Windows in background.
URL-Tracker - Calls depending on the configuration five seconds after launch the Google homepage opens in background
These are not in SRWare Iron
Read more and get it here