Ruth Ellen Gruber writes about a handful of Budapest synagogues that have seen an upsurge of membership and communal engagement in recent years thanks to active young rabbis and a family-friendly focus. With an estimated 80,000 Jews, Budapest has the largest Jewish population of any central European city. It is home to about 20 Jewish congregations, ranging from the dominant Neolog (moderate Conservative) stream to traditional Orthodox and Chabad, to American-style Reform, to informal minyanim such as Dor Hadash, an independent egalitarian congregation that is associated with the Masorti (Conservative) movement.