SiteBlocker

A free browser extension for Chrome and Firefox that blocks distracting websites to improve focus and productivity. It solves the problem of time wasted on social media and other time-wasting sites by allowing users to create custom blocklists, schedule blocking times, and start focus sessions. It targets individual users, including students, professionals, and anyone seeking to reduce digital distractions, as well as teams and organizations looking to enhance workplace productivity. It is positioned as a privacy-first alternative to other blockers, offering all core features for free with zero data collection.

Key features

• Custom blocklists
• Scheduled blocking
• Focus sessions with Pomodoro timer
• Whitelist mode
• Cross-device sync
• Zero data collection
• Keyword blocking (Pro)
• Analytics dashboard (Pro)