- Leechblock - Firefox Add-ons
- Multiple block sets – Set up to 6 different block sets, each with their own custom times and days.
- Flexible block rules – Block sites between specific time periods, after they've been used for a certain amount of time, or both.
- Wildcard rules – Blocked domains can contain wildcards, and subdomains can also be excluded.
- Statistics – Keeps track of the total time spent on each site.
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