I use Better History on a daily basis for timekeeping. It's so much better than Improved History it ain't even funny.

It's a vast improvement in the core, raison d'être functionality one needs in a history plugin:
* Above all else, I've found Better History to be completely accurate (whereas IH's history is a fragmentary joke that will outright lose hours or even days)
* It can be opened in a tab / window as a stable & useful reference that *doesn't* vanish as soon as one clicks away (whereas IH is just a context menu that pops up over the active page and remains open only during mouse-over / mouse hover)

Seriously, this plugin has made my work life a lot easier.

Thank you, Vincent!