Top 10 Best Website Blocker Software of 2026

Cold Turkey Blocker is a powerful productivity tool that blocks distracting websites, applications, and even the entire internet to help users maintain focus. It features unbreakable schedules, customizable block lists, and Locked Mode that prevents easy circumvention by hiding settings or requiring passwords. Available for Windows and Mac, it's designed for serious users seeking ironclad distraction elimination.

Freedom is a cross-platform productivity tool that blocks distracting websites and apps to help users maintain focus during work or study sessions. It supports scheduling recurring blocks, custom blocklists, and synchronization across Mac, Windows, iOS, and Android devices. The app's Locked Mode prevents users from disabling blocks prematurely, enforcing discipline.

FocusMe is a powerful productivity tool that blocks distracting websites and applications across browsers and desktops, helping users stay focused with customizable schedules, timers, and strict enforcement modes. It supports Windows primarily, with Android compatibility, and includes features like password protection and focus sessions to prevent procrastination. Ideal for combating digital distractions, it offers granular control over access during specific times or indefinitely.

SelfControl is a free, open-source macOS application designed to block access to distracting websites and custom blacklists for a user-defined period, ranging from 15 minutes to 24 hours. Once activated, the block cannot be stopped, bypassed, or undone—even by force-quitting the app, restarting the computer, or deleting it—making it a 'nuclear option' for productivity. It modifies the hosts file to redirect blocked sites to localhost, providing a robust, no-escape barrier against procrastination.

BlockSite is a popular productivity tool available as browser extensions for Chrome, Firefox, Edge, and mobile apps for Android and iOS, designed to block distracting websites and apps. It offers features like custom block lists, scheduling, password protection, and focus modes including Pomodoro timers to enhance concentration. Users can also leverage community-shared block lists for quick setup of common distractions like social media.

Pluckeye is an open-source website blocker primarily designed to combat pornography addiction and internet distractions by blocking images across browsers and allowing custom site filters. Its standout feature is a configurable delay mechanism, where changes to blocks or whitelists only take effect after a user-set period (e.g., 24 hours), preventing impulsive bypassing. Available on Windows, macOS, Linux, and Android, it emphasizes long-term commitment over quick flexibility.

Serene is a productivity-focused website and app blocker designed for macOS and Windows users, emphasizing scheduled focus sessions to eliminate distractions. It automatically creates block sessions from your calendar events, blocking customizable lists of distracting sites and applications during those times. The app also includes ambient sounds, goal setting, and productivity stats to support deep work habits.

Opal is a productivity app that blocks distracting websites and apps across devices to enhance focus and build better habits. It offers customizable schedules, one-tap focus sessions, streak tracking, and cross-device sync for iPhone, iPad, Mac, Android, and Chrome extension users. With motivational elements like group sessions, Opal goes beyond basic blocking to encourage sustained productivity.

AppBlock is a mobile productivity app for Android and iOS designed to block distracting apps and websites, helping users maintain focus and reduce screen time. It features customizable schedules, profiles for different blocking rules, and a strict mode that requires completing tasks to unblock access. While primarily mobile-focused, it effectively limits website access in browsers during set periods, making it suitable for on-the-go digital detox.

Qustodio is a parental control platform with strong website blocking capabilities, allowing users to filter web content by over 30 predefined categories or custom blacklists/whitelists. It enforces safe search on major engines, blocks specific sites, and provides detailed browsing reports across Windows, Mac, Android, iOS, and Kindle devices. While versatile for family safety, its web blocking is part of a broader suite including time limits, app controls, and location tracking.