Compare the Top Free DNS Security Software as of December 2025

What is Free DNS Security Software?

DNS security software enables organizations to protect their DNS against threats and malware. DNS security solutions streamline the process of securing DNS servers against attacks. Compare and read user reviews of the best Free DNS Security software currently available using the table below. This list is updated regularly.

  • 1
    Control D

    Control D

    Control D

    Control D is a customizable DNS filtering and traffic redirection platform that leverages Secure DNS protocols like DNS-over-HTTPS, DNS-over-TLS and DNS-over-QUIC, with support for Legacy DNS. - Block malicious threats - Block unwanted types of content network wide (ads & trackers, IoT telemetry, adult content, socials, and more) - Deploy in minutes on fleets of devices using RMM - Manage clients using sub-organizations - Gain visibility on network events and usage patterns, with client level granularity - Re-route traffic via proxies (through DNS) for improved privacy and security - Enjoy superior UX and simplicity Think of it as your personal Authoritative DNS resolver for the entire Internet that gives you granular control over what domains get resolved, redirected or blocked.
    Leader badge
    Starting Price: $2/month
    View Software
    Visit Website
  • 2
    Cloudflare

    Cloudflare

    Cloudflare

    Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.
    Leader badge
    Starting Price: $20 per website
    View Software
    Visit Website
  • 3
    SafeDNS

    SafeDNS

    SafeDNS

    At SafeDNS, we are committed to creating a safer and more secure online environment for SMBs, enterprises, ISPs, MSPs, OEMs, and Education. We have a global footprint, making the internet safer for millions of users in over 60 countries. With years of experience in the field of cybersecurity and DNS filtering, we offer cutting-edge solutions to safeguard your digital life. At present, SafeDNS serves more than 4000 businesses and institutions, and tens of thousands of home users worldwide. We do: -Web content filtering. We help you block all dangerous or unwanted websites such as pornography, violence, child sexual abuse and similar categories. -Malware protection. We also have your back against malicious sites trying to breach user devices either with viruses or information theft intent. -Cloud service. Additionally, we provide you with a cloud filtering service that requires no additional hardware purchase or software installation.
    Leader badge
    Starting Price: $0.9/user/month
  • 4
    FlashStart

    FlashStart

    FlashStart Group Srl

    FlashStart is a global, cloud-based cyber security platform that specializes in DNS filtering with the support of artificial intelligence. It protects against malware and unwanted contents by classifying domains into eighty-five categories, using machine learning with high predictive capability and incorporating government blacklists and warnings for high-risk sites. It offers global coverage, thanks to Anycast Network, which is among the fastest and most stable in the world. It presents advanced and exclusive features, like geographically based protection. Easy installation, centralized multi-tenant management, filter customization, and maximum cost-effectiveness make FlashStart the optimal cloud solution for businesses, PAs, schools, households, etc.
    Starting Price: $0.90/month
  • 5
    AutoSPF

    AutoSPF

    AutoSPF

    What if you could update your SPF record automatically? Better yet, what if someone else automatically updated it for you and you never had to worry about it again? With AutoSPF you just add a single include in your SPF record that points to our server and we take care of the rest. AutoSPF always returns a flattened SPF record to public DNS queries. It's built on the real-time information held in the include statement. AutoSPF does all those things you'd expect from an SPF flattening service. Automatic flattening of all the domains in the include. With AutoSPF you won't need to constantly modify your DNS records in order to update SPF. You can add new networks or authenticate new senders at the click of a button. Rather than SPF flattening being a feature of a larger and more expensive suite of software we have designed AutoSPF to solve just one issue. There is no need to pay hundreds or even thousands more per month for features that you don't need.
    Starting Price: $27 Fee
  • 6
    IBM NS1 Connect
    IBM NS1 Connect offers premium, authoritative DNS and advanced traffic steering to deliver the high-performance, reliable, secure network connectivity that businesses need to meet increasingly sophisticated customer expectations. NS1 Connect’s global anycast network provides the massive capacity and scale needed to keep users reliably connected across the world. An API-first architecture empowers teams to embrace automation and streamline DNS management. Enterprises with complex network infrastructures can take performance to the next level with sophisticated traffic steering capabilities and real-time reporting on DNS observability data.
    Starting Price: $250/month
  • 7
    CleanBrowsing

    CleanBrowsing

    CleanBrowsing

    A modernized approach to DNS-based content filtering and security. Easily decide what should, and should not, be allowed on your internet. Effective for our kids, powerful for our business. CleanBrowsing is a DNS-based content filtering service that offers a safe way to browse the web without surprises. It intercepts domain requests and filter sites that should be blocked, based on your filtering needs. Our, free, family filter, for example, blocks porn, obscene, and adult content, while still allowing Google, Youtube, Bing, DuckDuckGo and the rest of the web to load safely. Our free filters are comprised of three predefined filters for global consumption (Security, Adult, and Family). The Family filter blocks adult / obscene content and applies Safe Search filters to Google, Bing, Yandex, etc. The security filter, however, only focuses on restricting access to malicious activity.
    Starting Price: $59.99
  • Previous
  • You're on page 1
  • Next