AddonBenchStayFocusd
Configurable site blocker and focus timer for people who lose hours to distracting sites.
StayFocusd limits time spent on sites you nominate, blocking by domain, subdomain, path, page, or in-page content such as videos and images. It includes usage analytics, scheduled blocking, and a Nuclear Option that locks access for a set window. The extension is free with no paid tier.
