block websites on Mac. for real.

Why other website blockers don't work

Chrome extensions can be disabled in 5 seconds. Screen Time only works in Safari and has an "Ignore Limit" button. Most blockers stop when you quit the app. If there's a way around it, you'll find it at 2 PM when your willpower is gone.

How Sloth is different

Sloth runs a privileged daemon with root access that blocks websites at three levels. DNS hosts file makes the domain unresolvable. Packet filter firewall blocks the server IPs. Browser redirect catches any remaining attempts. All three layers active simultaneously, across every browser.

Sites you can block

Block any website. Popular presets include:

Features

• Locked sessions that the daemon enforces at root level
• Recurring schedules with day-of-week and time range
• Daily budgets to limit time on specific sites
• One-tap presets for quick blocking sessions
• Screen time tracking per app and per website
• Menu bar integration for quick access
• iCloud Private Relay automatically blocked when active
• 7 browsers supported (Safari, Chrome, Arc, Brave, Edge, Helium, Orion)