An efficient blocker for Chromium and Firefox. Fast and lean.
Blokada is the popular ad blocker and privacy app for Android and iOS. It's being supported and actively developed by the amazing open source community.
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.
The repository has been archived and the development has been stopped. https://github.com/uBlockOrigin/uMatrix-issues/issues/291
LuLu is the free, shared-source firewall for macOS. Its goal is simple; block any unknown outgoing connections, until approved by the user. While it was designed to generically detect malware by flagging unauthorized networking connections, LuLu can also be used to block OS...
dns66 - DNS-based Host Blocker for Android. DNS66 allows blocking host names via DNS. This can be used for ad blocking. It also allows other DNS servers to be added, for more privacy.
TrackerControl allows users to monitor and control the widespread, ongoing, hidden data collection in mobile apps about user behaviour ('tracking').
TrackerControl vs Lockdown Privacy opinions
Way more granular than Lockdown in terms of blocking and unblocking and a lot easier to see what apps are connecting to what services.
An OpenSnitch-inspired firewall and network monitor + a pi-hole-inspired DNS over HTTPS client with blocklists.