EBITs are versatile tools for spectroscopic studies of partially ionized atomic systems, mainly in the x-ray domain. This yields valuable information for fundamental atomic physics as well as astrophysics. Ion charge state distributions, resulting from ionization and recombination processes, can be observed and used to benchmark plasma dynamics. Furthermore, EBITs can be used as small stand-alone ion sources, as they are already used for example at the HITRAP facility. The Jena S-EBIT facility are two EBITs, the former R- and S-EBIT from Stockholm*, which both are suitable for x-ray spectroscopy studies and ion extraction. The S-EBIT I has been used as a tool for x-ray spectroscopy, including the testing of newly developed x-ray detectors, like the magnetic metallic microcalorimeter maXs30**. In addition, the setup was expanded by a testing beamline, to evaluate the potential of the S-EBIT I as an ion source. The S-EBIT II is currently in commissioning for operation as a standalone ion source for HITRAP in the near future. This will provide new opportunities for local experiments, like the ARTEMIS experiment, independently from the GSI accelerator infrastructure.