Bewertet mit 3 von 5 Sternen
StatusbarEx 0.3.5.1 is five years old (2011) but runs here on Firefox 50.0 even if the display may require a few FF modifications if the statusbar is not used : if so, and if the 'Classic Theme Restorer' (CTR) add-on is installed, go to
CTR's options -> General UI / Page 1 / 'Movable status panel' -> Checked
From there on StatusBarEx appears in the Statusbar (Add-on bar). Add-on's bar content may be moved to another toolbar as well.
My problem concerns the reliability of StatusbarEx's Firefox RAM usage, which corresponds to neither what is shown by Task Manager - Memory (private working set) - nor by what is displayed in an application called 'Process Lasso' - Memory (private working set) and Memory (private bytes) - but shows a value of its own somewhere between private working set and private bytes.
Therefor I won't use it. Unfortunately because IMO this add-on deserves an update, it is -- was -- well thought, handy, pertinent.