Best Free Web Content Filtering Software of 2025

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. With Control D you can: block malicious threats, block unwanted types of content network wide (ads & trackers, IoT telemetry, adult content, socials, and more), redirect traffic using transparent proxies and gain visibility on network events and usage patterns, with client level granularity. 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.

Kasm Workspaces streams your workplace environment directly to your web browser…on any device and from any location. Kasm is revolutionizing the way businesses deliver digital workspaces. We use our open-source web native container streaming technology to create a modern devops delivery of Desktop as a Service, application streaming, and browser isolation. Kasm is more than a service. It is a platform that is highly configurable and has a robust API that can be customized to your needs at any scale. Workspaces can be deployed wherever the work is. It can be deployed on-premise (including Air-Gapped Networks), in the cloud (Public and Private), or in a hybrid.

It is very difficult to find data to show people who don’t care about malware. Although people may not be able to provide the exact details, almost everyone is aware that it's a serious threat. FlashStart blocks botnets, ransomware, malware, and other threats using global, top-class protection streams. You can block any web content that you find inappropriate by using content filtering. These sites could be dangerous, distracting, and unsavoury. Pro+ includes a secure, downloadable app. All devices are protected by centralized FlashStart protection at the home-office, cafe, and anywhere else. No router dependency. The idea is to optimize the filter to meet your individual needs. This is not an appliance. It is a lightweight application that runs on the existing IT systems of the end user. It should allow a low latency performance of less than 5ms.

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. Our innovative technologies help you stay protected against malware, phishing attacks, inappropriate content, and more. SafeDNS currently serves over 4000 institutions and home users around the world.

NextDNS offers comprehensive protection from various security risks, effectively blocking advertisements and trackers across websites and applications while ensuring a secure and monitored online experience for children on all devices and networks. You can assess your security needs and customize your protection by activating over ten different safety measures. By utilizing reliable threat intelligence feeds that contain millions of harmful domains and update constantly, you can enhance your defense mechanisms. Our system goes beyond merely tracking domains; it evaluates DNS queries and responses instantaneously, allowing for the swift identification and prevention of harmful activities. Given that there is often only a brief window of hours from when a domain is registered to when it is used in an attack, our advanced threat intelligence framework is designed to identify malicious domains more efficiently than traditional security methods. Additionally, you can effectively eliminate advertisements and trackers in both websites and applications, including even the most sophisticated ones, by leveraging the most widely used ad and tracker blocklists, which include millions of domains that are refreshed in real-time. Ultimately, NextDNS empowers users with tools to create a safer browsing environment tailored to their specific security needs.

Haltdos ensures the 100% high availability of your website/web services by providing intelligent Web Application Firewall and application DDoS mitigation, Bot Protection, SSL offloading, Load Balancing solution over the public and private cloud that monitors, detects, and automatically mitigates a wide range of cyber-attacks including OWASP top 10 and Zero-day attacks, without requiring any human intervention.

With Trend Micro Check, you can safeguard yourself against scams, phishing schemes, malware, and harmful links through our advanced detection technology. This all-in-one anti-scam mobile application and browser extension allows you to quickly assess the safety of any website or link, blocking access if threats are detected. Additionally, it helps identify and eliminate risks from your browsing history to prevent revisiting potentially harmful sites. Our top-tier database guarantees comprehensive protection against various scams, while also eliminating intrusive pop-up ads and banners. It prevents third-party trackers from monitoring your online activities and issues alerts before you finalize payments to suspicious entities. You can easily send a text, screenshot, or website link for prompt scam detection. By installing Trend Micro Check, you can effectively steer clear of scams, misinformation, and other online hazards. The application is compatible with iOS, Android, Chrome, Safari, and Edge, and it can also be accessed through WhatsApp and Messenger. Experience a private and ad-free browsing environment to enhance your online security and peace of mind.

Traditional packet filters are gradually becoming outdated, as even open-source solutions are shifting towards Next-Generation Firewalls. OPNsense stands out as a leading option for features like intrusion detection, application control, web filtering, and antivirus protection. No network, regardless of its size, is immune to potential attacks; even devices in home networks, such as washing machines and smartwatches, are at risk and need robust security measures. Firewalls play a crucial role in a comprehensive security strategy, shielding systems from both established and emerging threats. The effectiveness of a firewall is maximized when its capabilities are well understood, it operates intuitively, and is strategically placed within the network infrastructure. OPNsense rises to the occasion by fulfilling these essential requirements in various ways. This book serves as an invaluable guide for anyone looking to comprehend, install, and configure an OPNsense firewall effectively. Ultimately, understanding the intricacies of OPNsense can empower users to create a more secure digital environment.

Chrome Enterprise provides organizations with the tools needed to optimize productivity while ensuring robust security. By offering centralized management, Zero Trust protection, and integrations with existing IT systems, businesses can enhance their workflows with ease. Chrome Enterprise allows for secure remote work and collaboration, ensuring that teams have access to business apps and data no matter where they are. With flexible options for managing devices and policies, companies can streamline security, increase efficiency, and create an open, productive environment for employees across the globe.

ActiveFence is a leading Trust and Safety provider of online platforms. It protects over three billion users daily from malicious content and behavior. ActiveFence is trusted by Trust and Safety teams across the board to protect their users from online harms such as child abuse, disinformation and hate speech, fraud and terror. Our platform is equipped with a full range of capabilities, including AI-driven harmful content detection. ActiveFence protects online platforms in over 100 different languages. This allows people to interact and thrive online safely.

A contemporary method for DNS-based content filtering and security allows users to easily manage what content is accessible online. This solution is particularly beneficial for families and also serves as a robust tool for businesses. CleanBrowsing provides a DNS-based filtering service designed to ensure a safe browsing experience by preventing unwanted surprises. It accomplishes this by intercepting domain requests and blocking sites according to your specific filtering preferences. For instance, the complimentary family filter effectively prevents access to pornographic, obscene, and adult material, while still permitting safe access to popular sites like Google, YouTube, Bing, and DuckDuckGo. The service offers three distinct filters that cater to a global audience—namely, Security, Adult, and Family filters. The Family filter not only blocks adult and obscene content but also enforces Safe Search settings on various search engines like Google, Bing, and Yandex. On the other hand, the Security filter is exclusively aimed at limiting exposure to malicious websites, ensuring a safer online experience overall. By utilizing these tools, users can create a tailored internet environment that aligns with their individual needs and values.

Canopy stands out as the sole digital parenting application capable of identifying and restricting access to pornography across all websites on the internet. It also uniquely notifies parents right away if any sexting occurs, enabling them to engage in important discussions with their children. With Canopy, parents can feel secure about their children's safety as they navigate online spaces. The app employs cutting-edge technology, leveraging artificial intelligence and machine learning to promptly detect and eliminate pornographic material on both the internet and their child's smartphone camera. Protecting two million devices globally, Canopy plays a crucial role in safeguarding children in numerous schools and assists US law enforcement in combating digital crimes against minors. In addition to filtering inappropriate content on smartphones, it allows parents to schedule screen time breaks and track when their child leaves home or school. Moreover, Canopy provides families with a comprehensive suite of tools designed to help them flourish in an increasingly digital landscape, ensuring peace of mind for parents and a safer online environment for kids.

Blocksi offers AI-adaptive YouTube and web filtering specifically tailored for K-12 educators and students. The innovative classroom screen monitoring system transforms the educational landscape of the 21st century. With round-the-clock student and school safety provisions, it ensures peace of mind through advanced early threat detection mechanisms. Over 500 school districts and more than 3 million users rely on Blocksi to effectively manage diverse student devices, fostering an engaged and secure learning environment. By utilizing Blocksi, educators can empower, monitor, and protect their students with a comprehensive solution that integrates AI-driven threat detection, adaptive content filtering, and a bespoke classroom management system designed for K-12 institutions. This proactive approach allows schools to stay ahead of student needs without the hassle of constant block list updates. Effortlessly manage internet filtering on school-owned devices or bring-your-own-device (BYOD) with access to more than 90 filtering categories, along with regular, DNS, and time-based policies that support multiple operating systems. As a result, schools can create a safer and more productive educational experience for all.

The Comodo Security Operations Center (CSOC) offers around-the-clock security oversight provided by certified analysts utilizing cutting-edge technology. The professionals at CSOC are responsible for identifying and evaluating threats, issuing alerts when necessary to engage clients in resolving issues and aiding in mitigation efforts. By leveraging Comodo cWatch CSOC, your internal IT department can enhance its ability to safeguard applications through advanced security solutions that are simple to deploy, fully managed, and do not necessitate significant initial investments. This service is engineered to streamline the intricate and time-intensive process of investigating security incidents while alleviating the financial burden associated with maintaining in-house security personnel. With real-time monitoring of web traffic and proactive threat identification, our security specialists can promptly inform organizations and take appropriate measures when an attack is detected. Continuous surveillance by the Comodo CSOC team, who possess extensive expertise in application security monitoring and management, ensures that organizations can operate with greater peace of mind. This comprehensive approach not only protects your assets but also allows your team to focus on core business functions without the distraction of security concerns.