0xCUB3/wBlock

wBlock is a free, open-source ad blocker for Safari on macOS, iOS, iPadOS, and visionOS.

Safari's content-blocker API limits each extension to 150,000 rules and prevents direct JavaScript execution. wBlock circumvents these constraints by deploying five separate content blockers totaling 750,000 rules, paired with a scripts extension that handles filtering logic beyond what rules alone can accomplish. This dual approach enables support for scriptlets, cosmetic filters, userscripts, userstyles, element zapping, and native video players for YouTube and other sites. The tool strips tracking parameters from URLs and unwraps link shorteners by default. It collects no data and provides transparency through a rules viewer showing which filter lines Safari rejected, duplicated, or delegated to the scripts extension.

wBlock suits developers and privacy-conscious users who want comprehensive ad and tracker blocking within Safari's constraints without relying on closed-source solutions. The project includes a built-in catalog of popular userscripts and userstyles such as Tube Cleaner, DeArrow, Dark Reader, and Return YouTube Dislike, though most ship disabled. The README provides a comparison with uBlock Origin Lite, Wipr, and AdGuard, noting that wBlock's approach of splitting rules across multiple blockers and adding a scripts extension differentiates it from alternatives constrained by Safari's single-blocker limit.

Development activity shows consistent engagement with filter-list maintenance and feature refinement. The project maintains an active update schedule for bundled filter lists and responds to user-reported issues with list compilation problems. Documentation covers userscript and userstyle support in detail, indicating attention to the scripting ecosystem. The codebase is written in Swift and SwiftUI, reflecting native platform integration across Apple's ecosystem.