After years of stagnation and turbulence, the first ever Latin American pope has brought a down-to-earth style to the papacy and has shown a willingness to tackle issues like the Vatican's secretive finances.
Francis has also established himself as a global voice on the side of the dispossessed with his critique of unfettered capitalism -- earning the label of "Marxist" from conservative commentators in the United States.
He has accumulated 10 million followers on Twitter under the @pontifex handle, nearing rock star popularity, and has been named "Person of the Year" by Time and the US gay rights magazine The Advocate.
"He puts himself at the level of ordinary people without formalism and without barriers," said Marco Politi, a Vatican expert and author of biographies of the two previous popes, John Paul II and Benedict XVI.
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Those issues have hardly gone away, however.
Analysts warn that progressives in the Church and its many critics who have hoped for a raft of reforms of Catholic teachings will be disappointed.
Francis remains a moral conservative, although a compassionate one, who is virtually certain to stick to doctrine on hot-button issues like abortion and contraception, or priestly celibacy and women priests.
Even the pope's widely-praised comment about gay people -- "Who am I to judge?" -- is seen as showing a new tolerance but is unlikely to alter the Church's fundamental condemnation of homosexual acts as a sin.