Privoxy is a free non-caching web proxy with filtering capabilities for enhancing privacy, manipulating cookies and modifying web page data and HTTP headers before the page is rendered by the browser.
License: Open Source
Privoxy is a powerful open-source tool suitable for users who prioritize privacy and customization, but it may require more technical knowledge to set up. On the other hand, Adguard offers a user-friendly experience with robust ad-blocking and tracking protection features, though it comes at a cost and may have limited customization.