EPICS with ROOT and Objectivity
We use EPICS primarily for High Voltage control. We use ROOT as a front-end to display HV properties (strip charts, deviations, channel overviews).
Right now we have several LeCroy HV modules in use, some other custom-built hardware (most notably the VME-based HiVoC card) will be interfaced with EPICS soon.
The HV data (history) gets stored in an Objectivity database.