by Bjango excels at making system data part of the OS interface. Granular Control
iStat Menus treats the menubar icon as a gateway to a massive graph library. When you click the CPU icon, a large dropdown window appears filled with line graphs, process lists, and historical data spanning hours or days. You can customize exactly what text appears in the menubar (e.g., "3.4 GHz 45°C"). istat menus vs istatistica pro