upsm 3.0.0
upsm is public domain, Qt-based ups monitor (front-end for upsc from Network UPS Tools). It sits at the tray and polls nut server using upsc, so you need to set up NUT first (ups.conf and other stuff). From the Settings of upsm you can define the command line for upsc (i.e. "upsc serverups@localhost" for example) and polling time period, in millisecond.