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 15 are Firewalls so hopefully you can find a suitable replacement. Other interesting Firewall alternatives to NextDNS are AdGuard, Pi-hole, RethinkDNS and AdGuard Home.
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.
Austria
EU
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.
CyprusEU
Blocks ads for all connected devices at the DNS layer without client setup. Provides web control, in-app ad and tracker blocking, DHCP and API support, regex filtering, privacy modes, audit logs, and long-term query analytics for network management.
United States
An OpenSnitch-inspired firewall and network monitor + a pi-hole-inspired DNS over HTTPS client with blocklists.
United States
AdGuard Home is a network-wide software for blocking ads & tracking. After you set it up, it'll cover ALL your home devices, and you don't need any client-side software for that.
CyprusEU
InviZible Pro uses DNSCrypt Protocol, Tor and i2pd (I2P Daemon) (PurpleI2P) to achieve maximum security, privacy and comfortable use of the Internet.
Ukraine
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.
GermanyEU
SwedenEU
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.
United Kingdom
CacheGuard Gateway is a free, open-source network security appliance for startups, growing businesses, and SMEs/SMBs that need enterprise-grade protection without the complexity or cost.
FranceEU
Firewalla is a vital security addition to every home and small business with network and IoT devices.
United States
