The new site, at www.osetia-war.com, is supported by the Russia Today international news channel and provides information on the process and results of the investigation into Georgia's attack on South Ossetia on August 8.
"We would like to give access to the evidence of eyewitnesses, to information that is lacking, and to the facts that allow a person to come to a conclusion," chairwoman Olga Kostina said.
She added that osetinfo.ru, the commission's original Russian-language site, could be later translated into another European language.
The Public Investigation Commission on War Crimes in South Ossetia and Civilian Victims Aid was established on August 12 with the stated aims of investigating the events in South Ossetia and giving an unbiased evaluation, and providing aid to the victims.
The commission was set up by human rights activists and public figures in Russia.
The English-language site was launched on the demands of the visitors to osetinfo.ru, and has introduced a list of people who died during the armed conflict.
The crisis began when Georgian forces attacked breakaway South Ossetia on August 8, triggering a Russian operation to "force Georgia to peace." Most residents of South Ossetia and another separatist region, Abkhazia, have Russian citizenship.
Russia recognized South Ossetia and Abkhazia on August 26.
