The best Firewall alternative to NextDNS is Portmaster, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to NextDNS and 12 are Firewalls so hopefully you can find a suitable replacement. Other interesting Firewall alternatives to NextDNS are AdGuard, RethinkDNS, InviZible Pro and Zen Ad-Blocker.
Free, open-source privacy suite monitoring all network activity, blocking unwanted connections, using trusted filter lists for ads and malware, enforcing DNS-over-TLS, providing custom app and global rules, and supporting advanced privacy management.
Ad-blocking solution eliminating intrusive ads and preventing tracking, with malware protection. Filters pop-ups, banners, and more for clean browsing. Works in the background for ad-free surfing, protects data privacy with Spyware filter, and controls ad display in apps.
An OpenSnitch-inspired firewall and network monitor + a pi-hole-inspired DNS over HTTPS client with blocklists.
InviZible Pro uses DNSCrypt Protocol, Tor and i2pd (I2P Daemon) (PurpleI2P) to achieve maximum security, privacy and comfortable use of the Internet.
Zen is an open-source system-wide ad-blocker and privacy guard for Windows, MacOS, and Linux. It works by setting up a proxy that intercepts HTTP requests from all applications, and blocks those serving ads, tracking scripts that monitor your behavior, malware, and other...
DNS66 blocks advertisements on Android by intercepting DNS requests using Android's VPN layer and blocking requests for blacklisted hosts.
CacheGuard is a free open-source network security appliance for startups and growing businesses that need enterprise-grade protection without the complexity or the cost.
A fundamental re-design of user Data Privacy. Your multi-tool for online protection. So easy your grandma could use it. Costs less than a cup of coffee per year.
Firewalla is a vital security addition to every home and small business with network and IoT devices.
ZenMate Web Firewall is a security solution that blocks malware, trackers and security threats, plus free Ad Blocker against Malvertising!.
Free adblocker, anonymity, traffic and battery saver, firewall, and Internet speed increase.
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AdGuard is a good alternative but NextDNS seems more trustworthy.