# Top Free DNS Security Solutions - Page 2 ## How Many DNS Security Solutions Products Does G2 Track? **Total Products under this Category:** 84 ### Category Stats (Aug 2026) - **Average Rating:** 4.5/5 The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** Verizon DNS Safeguard (+0.25%) - Among all products in this category, Verizon DNS Safeguard recorded the largest rating increase compared to last month _Last updated: August 06, 2026_ ## How Does G2 Rank DNS Security Solutions Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 2,700+ Authentic Reviews - 84+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## G2 Grid® for DNS Security Solutions ![G2 Grid® for DNS Security Solutions plotting products by satisfaction and market presence](https://www.g2.com/categories/dns-security-solutions/grids.png?focus%5B%5D=10700&focus%5B%5D=23936&focus%5B%5D=30548&focus%5B%5D=1386549&focus%5B%5D=65970&focus%5B%5D=99424&focus%5B%5D=55957&focus%5B%5D=56041) Highlighted products: Cloudflare Application Security and Performance, DNSFilter, Cisco Umbrella, Cloud-Delivered Security Services, IBM NS1 Connect, Verizon DNS Safeguard, Webroot DNS Protection, and BloxOne DDI. Underlying data: [Grid® JSON](https://www.g2.com/categories/dns-security-solutions/grids.json?focus%5B%5D=cloudflare-application-security-and-performance&focus%5B%5D=dnsfilter&focus%5B%5D=cisco-umbrella&focus%5B%5D=cloud-delivered-security-services&focus%5B%5D=ibm-ns1-connect&focus%5B%5D=verizon-dns-safeguard&focus%5B%5D=opentext-webroot-dns-protection&focus%5B%5D=bloxone-ddi) **Sponsored** ### Heimdal Accommodate all your cybersecurity needs under one convenient roof with the Heimdal® Unified Cybersecurity Platform. Our cybersecurity solutions can be used as standalone products or integrated into one another as part of a cohesive and unified XDR platform. Whether you’re a reseller, distributor, MSSP, or an organization committed to bolstering your online security, we provide an array of cutting-edge products to make your mission smoother. Heimdal® is a fast-growing cybersecurity company focused on continuous technological innovation. Since its establishment in 2014 in Copenhagen, based on the winning idea of CTF World Champions, Heimdal has experienced spectacular growth by proactively building products that anticipate threatscape trends. The company offers a multi-layeredand unified security suite that combines threat prevention, patch and asset management, endpoint rights management, antivirus and mail security which together secure customers against cyberattacks and keep critical information and intellectual property safe. Heimdal has been recognized as a thought leader in the industry and has won multiple international awards both for its solutions and for its educational content creation. The Heimdal line of products currently consists of 10 products and 2 services. The former category encompasses DNS Security for Endpoints & Network, Patch & Asset Management, Privileged Access Management, Application Control, Next-Gen Endpoint Antivirus, Ransomware Encryption Protection, Email Security, Email Fraud Prevention, and Remote Desktop. The latter is represented by Endpoint Detection & Response, as well as eXtended Detection & Response, or EDR and XDR for short. Currently, Heimdal’s cybersecurity solutions are deployed in more than 45 countries and supported regionally from offices in 15+ countries, by 175+ highly qualified specialists. Heimdal is ISAE 3000 certified and secures more than 2 million endpoints for over 10,000 companies. The company supports its partners without concessions on the basis of predictability and scalability. The common goal is to create a sustainable ecosystem and a strategic partnership. [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1952&secure%5Bchosen_at%5D=2026-08-15T05%3A15%3A39Z&secure%5Bdisplayable_resource_id%5D=1952&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1952&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=165598&secure%5Bresource_id%5D=1952&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fdns-security-solutions%2Ffree%3Fpage%3D2&secure%5Btoken%5D=8e3ac5b02b3981a9b9067d68b48a43ea68cca69964d5a619ddf5c2d878b0ee1b&secure%5Burl%5D=https%3A%2F%2Fheimdalsecurity.com%2F%3Fpartner%3Dg2com%26source%3Dg2.com&secure%5Burl_type%5D=custom_url) ### [ThreatLocker Zero Trust Platform](https://www.g2.com/products/threatlocker-zero-trust-platform/reviews) ThreatLocker is a global leading Zero Trust Platform designed to empower organizations by providing them with the ability to control which applications are permitted to run on their networks. This suite of security tools is tailored for a wide range of users, including businesses, government agencies, and academic institutions, all of whom face the increasing threat of cybercrime. By enabling users to manage application execution, ThreatLocker aims to create a secure environment where organizations can operate without the looming fear of malware and other cyber threats. The ThreatLocker suite stands out in the cybersecurity landscape due to its focus on application allowlisting, a proactive approach that allows organizations to define and enforce policies on what software can be executed. This feature is particularly beneficial for organizations that require stringent security measures, as it minimizes the risk of unauthorized applications compromising sensitive data. The solution is designed for IT administrators who seek to enhance their network security posture while maintaining operational efficiency. One of the key features of ThreatLocker is its ability to provide real-time visibility and control over application behavior. This allows organizations to monitor application usage and detect any suspicious activities that may indicate a potential threat. Additionally, ThreatLocker offers customizable policies that can be tailored to meet the specific needs of different departments or user groups within an organization, ensuring that security measures align with operational requirements. Another significant benefit of ThreatLocker is its user-friendly interface, which simplifies the management of security policies. This accessibility enables IT teams to implement and adjust security measures without extensive training or expertise in cybersecurity. Furthermore, ThreatLocker is backed by a team of experienced cybersecurity professionals who continuously update and enhance the platform to address emerging threats and vulnerabilities. In essence, ThreatLocker provides organizations with the tools they need to take control of their cybersecurity strategy. By focusing on application control and offering robust monitoring capabilities, ThreatLocker helps organizations mitigate risks associated with cyber threats while fostering a secure environment for their operations. This innovative approach to cybersecurity empowers users to navigate their digital landscape confidently, free from the influence of cybercriminals. **Average Rating:** 4.8/5.0 **Total Reviews:** 513 #### How Do G2 Users Rate ThreatLocker Zero Trust Platform? - **Has the product been a good partner in doing business?:** 9.7/10 (Category avg: 9.2/10) #### Who Is the Company Behind ThreatLocker Zero Trust Platform? - **Seller:** [Threatlocker Inc](https://www.g2.com/sellers/threatlocker-inc) - **Company Website:** www.threatlocker.com - **Year Founded:** 2017 - **HQ Location:** Orlando, Florida, United States - **Twitter:** @ThreatLocker 2,764 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=03e47fc37804aa3e4c708b32a22a486387eb69a64688b6ee81bb1dc565ec69db&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F65512111%2F&secure%5Burl_type%5D=linkedin_company_website) 736 employees on LinkedIn® #### Who Uses This Product? - **Who Uses This:** President, CEO - **Top Industries:** Information Technology and Services, Computer & Network Security - **Company Size:** 53% Small, 33% Medium #### What Do G2 Reviewers Say About ThreatLocker Zero Trust Platform? _AI-generated summary from verified user reviews_ ##### Pros - Users rave about the **fantastic customer support** provided by ThreatLocker, ensuring prompt resolutions and valuable assistance. - Users find ThreatLocker Zero Trust Platform to be extremely **easy to implement and manage** , enhancing their security effortlessly. - Users appreciate the **effective threat detection** of ThreatLocker, enhancing security and confidence in their environments. - Users value the **robust security** of ThreatLocker, enhancing control and minimizing risks in dynamic environments. - Users value the **comprehensive application control** features of ThreatLocker, enhancing security and simplifying policy management effectively. ##### Cons - Users find the **steep learning curve** of ThreatLocker challenging, particularly for those lacking dedicated IT support. - Users find the **difficult learning curve** of ThreatLocker challenging, especially with training and policy management complexities. - Users find the **configuration process challenging** , often requiring additional support to manage effectively within teams. - Users find the **system complicated** , often requiring expertise and support for effective configuration and use. - Users find the **training required** for ThreatLocker challenging and time-consuming, hindering user understanding and adoption. #### What Are Recent G2 Reviews of ThreatLocker Zero Trust Platform? **["Smooth, Easy-to-Use Platform with Game-Changing Cyber Heroes Support"](https://www.g2.com/survey_responses/threatlocker-zero-trust-platform-review-13170230)** **Rating:** 4.5/5.0 stars _— Justin F._ [Read full review](https://www.g2.com/survey_responses/threatlocker-zero-trust-platform-review-13170230) **["User-Friendly UI, Fast Portal, and Excellent Support"](https://www.g2.com/survey_responses/threatlocker-zero-trust-platform-review-13149982)** **Rating:** 5.0/5.0 stars _— Seth D._ [Read full review](https://www.g2.com/survey_responses/threatlocker-zero-trust-platform-review-13149982) #### What Are G2 Users Discussing About ThreatLocker Zero Trust Platform? - [Does ThreatLocker work on Mac?](https://www.g2.com/discussions/does-threatlocker-work-on-mac) - 2 comments, 1 upvote - [What is Application Control software?](https://www.g2.com/discussions/what-is-application-control-software) - [What is the function of application whitelisting?](https://www.g2.com/discussions/what-is-the-function-of-application-whitelisting) - 1 comment - [What does ThreatLocker do?](https://www.g2.com/discussions/what-does-threatlocker-do) - 1 comment ### [ADEPT Egress Control](https://www.g2.com/products/adept-egress-control/reviews) ADEPT Egress Control blocks breaches and protects your cloud workloads. Our product essentially zero-trusts your software, protecting against supply chain threats, command and control, and data leaks. Concerned about compliance and certification? See how ADEPT protects data access and privacy, detects intrusions and anomalies, and tracks activity at the server level. Dart Frog Cyber fills cybersecurity gaps for customers using smart software that's easy to manage and very affordable. Contact us today to discuss your particular needs and pain points--we're here to help! **Average Rating:** 5.0/5.0 **Total Reviews:** 1 #### Who Is the Company Behind ADEPT Egress Control? - **Seller:** [Dart Frog Cyber](https://www.g2.com/sellers/dart-frog-cyber) - **Year Founded:** 2022 - **HQ Location:** Ashburn, US - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=0666a7b0210463237c228a81f5d6f4b872f5135f4a513bcf32bd0e92c3cba616&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fdart-frog-cyber&secure%5Burl_type%5D=linkedin_company_website) 2 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Large #### What Are Recent G2 Reviews of ADEPT Egress Control? **["ADEPT Egres Controller New service, approach and insights"](https://www.g2.com/survey_responses/adept-egress-control-review-7171390)** **Rating:** 5.0/5.0 stars _— Bill H._ [Read full review](https://www.g2.com/survey_responses/adept-egress-control-review-7171390) ### [DefensX Secure Enterprise Browser](https://www.g2.com/products/defensx-secure-enterprise-browser/reviews) DefensX transforms any browser into a secure, zero-trust workspace—instantly. Our cloud-native extension delivers AI-powered phishing protection, browser-level DLP, and fine-grained data controls exactly where work happens, so users keep their familiar workflows and IT sheds complexity. DefensX is a hassle-free AI enabler for small and midsize enterprises, surfacing business and security insights with zero overhead through its Management Control Platform. Built for MSPs and today’s distributed teams, DefensX empowers organizations to: - Slash tooling costs by replacing multiple point products with one browser-first platform. - Stop web-borne threats before they ever reach users. - Secure access to data everywhere—managed or BYOD, office or remote via ZTNA. - Unlock AI-driven defenses and workforce analytics without disrupting productivity. Founded in 2020, DefensX protects thousands of companies worldwide, keeping them agile, compliant, and resilient. **Average Rating:** 4.0/5.0 **Total Reviews:** 1 #### Who Is the Company Behind DefensX Secure Enterprise Browser? - **Seller:** [DefensX](https://www.g2.com/sellers/defensx) - **Year Founded:** 2020 - **HQ Location:** New York, US - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7f099f355eb64e27049df8d9fb71815a6c29b0b570739e4e1903c87122cc6433&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fdefensxy%2F&secure%5Burl_type%5D=linkedin_company_website) 25 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Small #### What Are Recent G2 Reviews of DefensX Secure Enterprise Browser? **["Protection for my Team"](https://www.g2.com/survey_responses/defensx-secure-enterprise-browser-review-9825587)** **Rating:** 4.0/5.0 stars _— Linda R._ [Read full review](https://www.g2.com/survey_responses/defensx-secure-enterprise-browser-review-9825587) ### [DNS Assistant](https://www.g2.com/products/dns-assistant/reviews) DNS Assistant is an enterprise grade DNS monitoring and security platform that gives organizations real-time visibility into DNS changes, WHOIS data modifications, and certificate health across all their domains. Core Capabilities: Comprehensive DNS Monitoring - Tracks 15+ record types (A, AAAA, MX, NS, TXT, SOA, CNAME, CAA, DNSKEY, and more) with value-level change detection, not just record-level WHOIS Change Alerts - Monitors registrar, nameserver, expiry, contact, and privacy protection changes with configurable intervals from real-time (1-minute) to monthly SPF, DKIM & SSL/TLS Health Monitoring - Detects misconfigurations like overly permissive SPF, weakened DKIM keys, expiring certificates, and protocol downgrades before they become incidents Multi-Channel Notifications - Delivers alerts via email, webhook, Slack, Microsoft Teams, and SMS with severity-based escalation and repeat notification schedules Multi-Tenant Architecture - Built for teams with organization, team, and role-based access control (Organization Admin, Team Admin, Team User) and per-user token management Domain Expiry Countdown Alerts - Proactive warnings at configurable thresholds before domain registration expires API Access - Full REST API with scoped API keys for integration into existing DevOps and security workflows DNS Assistant transforms DNS and WHOIS data from an invisible vulnerability into a monitored, auditable, and secure layer of your infrastructure. Gain DNS Intelligence. Monitor your Domain DNS and WHOIS records with real-time alerts and comprehensive analysis of your DNS and WHOIS data. Each subscription level is assigned DNS and WHOIS tokens which are used to perform tasks and alerts throughout the system. DNS and WHOIS tokens can also be topped up. #### Who Is the Company Behind DNS Assistant? - **Seller:** [DNS Assistant](https://www.g2.com/sellers/dns-assistant) - **HQ Location:** N/A - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® ### [DNSRedo](https://www.g2.com/products/dnsredo/reviews) DNSRedo puts all your domain providers in one dashboard, saving you time and hassle. Manage DNS records, monitor changes, and keep your existing perks—without sacrificing speed or efficiency. Say goodbye to scattered accounts and complex setups, and take full control of your domains with DNSRedo.com #### Who Is the Company Behind DNSRedo? - **Seller:** [DNSRedo](https://www.g2.com/sellers/dnsredo) - **HQ Location:** N/A - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® ### [NOB.center Domain Trust Monitoring](https://www.g2.com/products/nob-center-domain-trust-monitoring/reviews) NOB.center is a domain monitoring platform for security and IT teams. It monitors Certificate Transparency logs, DNS records, RDAP registration data, deployed TLS certificates, and candidate lookalike domains. The platform records changes over time, provides snapshots and diffs, and sends alerts through configurable rules and webhooks. It is used to identify unexpected certificate issuance, DNS or registration changes, certificate deployment issues, and domains that may be associated with impersonation or phishing. #### Who Is the Company Behind NOB.center Domain Trust Monitoring? - **Seller:** [NOB.center](https://www.g2.com/sellers/nob-center) - **HQ Location:** N/A - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® ### [OpenText Core DNS Protection​](https://www.g2.com/products/opentext-core-dns-protection/reviews) OpenText Core DNS Protection is a cloud-based DNS filtering solution that blocks access to malicious, phishing, and risky websites before a connection is ever established. By analyzing DNS requests in real time, it prevents users and devices from reaching harmful domains associated with malware, ransomware, and command-and-control activity. Protection works both on-network and off-network, ensuring consistent security for remote and mobile users. Key benefits: Stops threats early – blocks malicious domains before infection can occur Real-time threat intelligence – continuously updated protection against new and evolving threats Protects users anywhere – secures devices on and off the corporate network Reduces attack surface – prevents access to phishing, ransomware, and risky sites Simple deployment – lightweight agent or network-level protection with minimal setup Centralized control – manage policies and visibility from a single cloud console Adding a strong first layer of defense by preventing users from ever connecting to dangerous destinations. #### Who Is the Company Behind OpenText Core DNS Protection​? - **Seller:** [OpenText](https://www.g2.com/sellers/opentext) - **Year Founded:** 1991 - **HQ Location:** Waterloo, ON - **Twitter:** @OpenText 21,565 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6c339a6555764b5ffce77c3df08d6ed9c9b1cb1ee1baeebac8435f0485b7cca5&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F2709%2F&secure%5Burl_type%5D=linkedin_company_website) 23,048 employees on LinkedIn® - **Ownership:** NASDAQ:OTEX - [‹ Prev ‹ Prev](/categories/dns-security-solutions/free?order=g2_score#product-list) - [1](/categories/dns-security-solutions/free?order=g2_score#product-list) - 2 - Next › Next › Spotlight Categories [Quality Management Systems (QMS)](https://www.g2.com/categories/quality-management-qms) [AI Writing Assistants](https://www.g2.com/categories/ai-writing-assistant) [Marketing Automation Software](https://www.g2.com/categories/marketing-automation) [Threat Intelligence Software](https://www.g2.com/categories/threat-intelligence) [Zero Trust Networking Software](https://www.g2.com/categories/zero-trust-networking) Similar Categories - [Business VPN](/categories/business-vpn) - [Firewall Software](/categories/firewall-software) - [Intrusion Detection and Prevention Systems (IDPS)](/categories/intrusion-detection-and-prevention-systems-idps) - [Microsegmentation](/categories/microsegmentation) - [Network Access Control (NAC)](/categories/network-access-control-nac) - [Network Detection and Response (NDR)](/categories/network-detection-and-response-ndr) - [Network Sandboxing](/categories/network-sandboxing) - [Network Security Policy Management (NSPM)](/categories/network-security-policy-management-nspm) - [Network Traffic Analysis (NTA)](/categories/network-traffic-analysis-nta) - [Software-Defined Perimeter (SDP)](/categories/software-defined-perimeter-sdp) - [Unified Threat Management (UTM)](/categories/unified-threat-management-utm) [Browse DNS Security Solutions Themes](/categories/dns-security-solutions/themes)