Technitium DNS Server is described as 'Open source tool that can be used as a personal local DNS server for privacy & security. It includes Ad blocking feature combined with DNS-over-TLS and DNS-over-HTTPS support' and is a Ad Blocker in the network & admin category. There are more than 25 alternatives to Technitium DNS Server for a variety of platforms, including Linux, Windows, Android, Web-based and Mac apps. The best Technitium DNS Server alternative is Pi-hole, which is both free and Open Source. Other great apps like Technitium DNS Server are AdAway, Blokada, AdBlock and Privoxy.