Harnessing the unique optical quantum interference effects associated with electromagnetically induced transparency (EIT) on a chip promises new opportunities for linear and nonlinear optical devices. Here, we review the status of integrated atomic spectroscopy chips that could replace conventional rubidium spectroscopy cells. Both linear and nonlinear absorption spectroscopy with excellent performance are demonstrated on a chip using a self-contained Rb reservoir and exhibiting a footprint of only 1.5cm x 1cm. In addition, quantum interference effects including V-scheme and Lambda-scheme EIT are observed in miniaturized rubidium glass cells whose fabrication is compatible with on-chip integration.