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The quest for neutrinoless double-beta decay ($0\nu\beta\beta$) is apromising experimental approach to search for lepton number violation in weakinteractions, a key ingredient in generating the matter-antimatter asymmetrythrough models of Leptogenesis. The $^{136}$Xe-based $0\nu\beta\beta$experiments KamLAND-Zen and EXO-200 currently set the most stringent limits onthis process using two very different techniques. Each are preparing the nextgeneration experiment, which will search for $0\nu\beta\beta$ in the parameterspace corresponding to the inverted hierarchy for neutrino mass. Both of thesetechniques scale well to larger volumes while incorporating interesting newtechniques. We present the status of current and next generation experiments ofthese collaborations and present two developments with the potential toidentify $\beta\beta$ decay events.

Searching for $0\nu\beta\beta$ decay in $^{136}$Xe -- towards the tonne-scale and beyond