K9 Web Protection, 1.1.1.1, Anti-Porn, Qustodio Parental Control, Cisco Umbrella, Plucky, DansGuardian, Nintendo Switch Parental Controls, GateSentry, Titan Family Security, The Web Blocker, squidGuard, Screen Time, CleanBrowsing, ESET Parental Control, Quad9, OpenNIC, Windows Live Family Safety, Arm Adult Filter, Family Zone, E2Guardian, Freenom World, Squidblacklist, HomeGuard Activity Monitor, WebTitan DNS Web Filter, Cedar Creek Internet Filter, Weblocker, Dns Angel, DNS Redirector, CyberPatrol Parental Controls, URL Classification, Intego Family Protector, FB Limiter, Verisign Public DNS, Visikid, DNSReactor, Privoxy, ProCon, Manage SPIN, Pc-Guardian are some alternatives to NxFilter.