Thats not the same thing, and it is not clear whether it is open either. Arc falls under artistic license and it is not clear at all if its free http://www.gnu.org/licenses/license-list.html#NonFreeSoftwar...

Even if the source was free, the brand need not be and in that case HNI would be plain illegal.

Its been mentioned here that Firefox is open source but they own the brand. If hypothetically speaking, you start distributing Firefox with its proxy settings customized for Indian ISPs and call it Firefox-India, the chances are high that you will hear from lawyers.