REXEBIS is an on-line device used for charge breeding of radioactive isotopes for the REX/HIE-ISOLDE post-accelerator. At REXEBIS, a gun using a nonadiabatic magnetic element to increase the electron current density has been installed. We will report on the results from the electron beam commissioning and present findings from various charge breeding studies. TwinEBIS is a test stand for the development of high current-density electron guns and for rapid production of bunches of 12C6+ for cancer treatment. Early tests with a Brillouin type electron gun installed at TwinEBIS were encouraging, with very low electron losses recorded. The ion extraction commissioning phase confronted us with unforeseen obstacles; only a fraction of the expected ion number is extracted and only moderate charge states are reached when injecting noble gases. We could demonstrate that some of the ions are lost at the ion extractor. In this respect, we will present the design concept of a new electron beam collector. Finally, we will briefly comment on the performance of a traditional IrCe cathode installed at REXEBIS, and a relatively new type of dispenser cathode from the Beijing University of Technology.