Top Free DDoS Protection Solutions - Page 2

How Many DDoS Protection Solutions Products Does G2 Track?

Total Products under this Category: 105

Category Stats (Nov 2026)

  • Average Rating: 4.43/5 The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Total Uptime (+1.01%) - Among all products in this category, Total Uptime recorded the largest rating increase compared to last month

Last updated: November 02, 2026

How Does G2 Rank DDoS Protection Solutions Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 3,100+ Authentic Reviews
  • 105+ 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 DDoS Protection Solutions

G2 Grid® for DDoS Protection Solutions plotting products by satisfaction and market presence

Highlighted products: Cloudflare Application Security and Performance, DataDome, Radware Cloud DDoS Protection Service, Arbor Threat Mitigation System, AWS Shield, HAProxy, Azion, and Google Cloud Armor.

Underlying data: [Grid® JSON](https://www.g2.com/categories/ddos-protection/grids.json?focus%5B%5D=cloudflare-application-security-and-performance&focus%5B%5D=datadome&focus%5B%5D=radware-cloud-ddos-protection-service&focus%5B%5D=arbor-threat-mitigation-system&focus%5B%5D=aws-shield&focus%5B%5D=haproxy&focus%5B%5D=azion&focus%5B%5D=google-cloud-armor)

Ammune Defense Shield (ADS)

Ammune™ is a Revolutionary AI-Based Solution for API Security Ammune™ API security platform, is an INLINE advanced Machine Learning solution that is made to actively protect APIs from the most advanced attack types, while hunting down "zero day" attacks with no impact on the normal traffic. Ammune™ API security platform discovers and defends automatically on each and every API. It iteratively builds negative and positive profiles of each API, that are used to spot and stop emerging threats that would otherwise go unnoticed. Ammune™ does not require previous experience of specific threats or pattern of activities. It works automatically, without prior knowledge or signatures, detecting and fighting back against subtle, stealthy attacks in real time.

Average Rating: 4.6/5.0

Total Reviews: 5

How Do G2 Users Rate Ammune Defense Shield (ADS)?

  • Logging: 10.0/10 (Category avg: 8.4/10)
  • IT Alerting: 10.0/10 (Category avg: 8.5/10)
  • Website Protection: 10.0/10 (Category avg: 8.9/10)

Who Is the Company Behind Ammune Defense Shield (ADS)?

Who Uses This Product?

  • Company Size: 80% Medium, 20% Small

What Are Recent G2 Reviews of Ammune Defense Shield (ADS)?

What Are G2 Users Discussing About Ammune Defense Shield (ADS)?

Gcore DDoS Protection

Gcore Security is a cloud-based platform that combines multi-layer DDoS protection across L3/4/7 with a fully featured WAF and WAAP to safeguard web applications, APIs, and infrastructure. It detects and mitigates threats in real time using globally distributed infrastructure and automated traffic filtering, ensuring stable performance even under extreme load. The platform supports fast onboarding with intuitive configuration for smaller teams, while offering enterprises advanced capabilities including a management API, Terraform provider, custom rule engines, SIEM/SOC integrations, and full log export. With specialized optimization for high-traffic, latency-sensitive workloads such as gaming and e-commerce, it delivers reliable protection and consistent application availability for businesses of any size.

Average Rating: 3.5/5.0

Total Reviews: 5

How Do G2 Users Rate Gcore DDoS Protection?

  • Logging: 8.3/10 (Category avg: 8.4/10)
  • IT Alerting: 8.3/10 (Category avg: 8.5/10)
  • Website Protection: 8.3/10 (Category avg: 8.9/10)
  • Ease of Setup: 3.3/10 (Category avg: 8.7/10)

Who Is the Company Behind Gcore DDoS Protection?

  • Seller: Gcore
  • Year Founded: 2014
  • HQ Location: Luxembourg, Europe
  • LinkedIn® Page: www.linkedin.com
    504 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 80% Small, 20% Medium

What Are Recent G2 Reviews of Gcore DDoS Protection?

HaltDos DDoS Mitigation Solution

Haltdos is an AI-based Web Application Firewall and DDoS mitigation solution which protects web applications and enterprise data centers against a wide range of cyberattacks.

Average Rating: 5.0/5.0

Total Reviews: 4

How Do G2 Users Rate HaltDos DDoS Mitigation Solution?

  • Logging: 8.3/10 (Category avg: 8.4/10)
  • IT Alerting: 10.0/10 (Category avg: 8.5/10)
  • Website Protection: 10.0/10 (Category avg: 8.9/10)

Who Is the Company Behind HaltDos DDoS Mitigation Solution?

  • Seller: HaltDos
  • Year Founded: 2015
  • HQ Location: Noida, India
  • LinkedIn® Page: www.linkedin.com
    50 employees on LinkedIn®
  • Ownership: Anshul Saxena

Who Uses This Product?

  • Company Size: 75% Medium, 25% Small

What Are Recent G2 Reviews of HaltDos DDoS Mitigation Solution?

What Are G2 Users Discussing About HaltDos DDoS Mitigation Solution?

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RioRey DDoS Protection Platform

The RioRey DDoS Protection Platform is a network-security solution that detects and mitigates Distributed Denial of Service (DDoS) attacks for Internet service providers, hosting companies, and enterprise networks. It is designed to provide high-capacity, automated defense across on-premise, virtual, and cloud-scrubbing deployments. At the core of the platform is RIOS, RioRey’s proprietary filtering software that analyzes packet behavior in real time to identify and block malicious traffic while preserving legitimate flows. RIOS can be delivered as a hardware appliance for line-rate throughput, as a virtual machine for flexible subscription deployment, or through rCloud, RioRey’s cloud-based scrubbing service. All deployments are managed through rWeb, a unified management and analytics console included with every license. Optional Director modules extend visibility by ingesting NetFlow data to support large multi-site environments. Architecture and Function: Our platform applies algorithmic detection that focuses on underlying attack methodology rather than relying on signatures, threat feeds, or baselines. This approach allows the system to recognize and mitigate all 25 known DDoS attack classes—volumetric, state-exhaustion, protocol, and application-layer—without continuous manual tuning. RioRey’s algorithms operate deterministically, ensuring predictable behavior and low false-positive rates even under extreme load conditions. Key Features: - Unified Management: rWeb provides centralized control, alerting, and reporting for all devices and tenants from a single interface. - Multi-Tenant Operation: Designed for service-provider environments, the platform supports segregated customer policies, reporting, and branding. - Flexible Deployment: Available as on-prem appliance, VM image, or cloud-scrubbing service to match operational and financial preferences. - Low Operational Overhead: Automated mitigation and policy inheritance minimize the need for manual intervention or frequent updates. - Hybrid Scalability: On-prem filtering integrates directly with rCloud scrubbing for overflow events or large-scale volumetric attacks. Use Cases: ISPs and Hosting Providers: Deliver managed DDoS protection to downstream customers while retaining visibility and control. Enterprises and Financial Institutions: Protect critical online applications and infrastructure without adding staff burden. Education and Public Sector Networks: Maintain uptime and service availability during peak traffic events or targeted attacks. Value Proposition: The RioRey DDoS Protection Platform enables organizations to deploy carrier-grade mitigation capacity with predictable performance and minimal operational complexity. By combining algorithmic detection, unified management, and multiple delivery models, it allows network operators to tailor protection to their topology and business model. Customers can start with a single appliance or VM and expand to hybrid or cloud configurations as requirements grow,all under one management framework.

Average Rating: 4.5/5.0

Total Reviews: 2

How Do G2 Users Rate RioRey DDoS Protection Platform?

  • Logging: 10.0/10 (Category avg: 8.4/10)
  • IT Alerting: 8.3/10 (Category avg: 8.5/10)
  • Website Protection: 8.3/10 (Category avg: 8.9/10)
  • Ease of Setup: 10.0/10 (Category avg: 8.7/10)

Who Is the Company Behind RioRey DDoS Protection Platform?

  • Seller: RioRey
  • Year Founded: 2007
  • HQ Location: Bethesda, US
  • LinkedIn® Page: www.linkedin.com
    16 employees on LinkedIn®
  • Ownership: Private
  • Phone: +001 240 497 0330

Who Uses This Product?

  • Company Size: 50% Medium, 50% Small

What Are Recent G2 Reviews of RioRey DDoS Protection Platform?

What Are G2 Users Discussing About RioRey DDoS Protection Platform?

StormWall

StormWall is a global cybersecurity provider focused on safeguarding websites, networks, services, and IT infrastructures of any size from modern DDoS attacks. With over 13 years of experience in DDoS protection, StormWall currently serves more than 1,300 active clients worldwide and has successfully completed over 8,000 projects across 70 countries. StormWall’s extensive global filtering network spans eight scrubbing centers, delivering a combined filtering capacity of over 8 Tbps. The company offers advanced protection against all known types of DDoS attacks at every layer, from L3 to L7, ensuring robust defense against today’s advanced multi-vector threats. Antibot protection is included in the Enterprise pricing plan to safeguard your business-critical web applications from bots. With StormWall, clients pay only for legitimate traffic, avoiding extra costs associated with attacks, which makes long-term expense management predictable and transparent. Our lightning-fast 24/7 technical support team is always on hand, with a guaranteed response time of 15 minutes or less, ensuring the swift resolution of any potential issues.

Average Rating: 4.3/5.0

Total Reviews: 2

Who Is the Company Behind StormWall?

  • Seller: StormWall
  • Year Founded: 2013
  • HQ Location: Podunajské Biskupice, SK
  • LinkedIn® Page: www.linkedin.com
    50 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 50% Small, 50% Medium

What Are Recent G2 Reviews of StormWall?

Cloudbric

Cloudbric is Penta Security's leading brand in the SaaS-type security platform industry. From IoT & End Point security to enterprise web security, Cloudbric provides services safeguarding all entities requiring an Internet connection. Get more information on Cloudbric in its website : www.cloudbric.com/

Average Rating: 4.3/5.0

Total Reviews: 14

How Do G2 Users Rate Cloudbric?

  • Ease of Setup: 6.3/10 (Category avg: 8.7/10)

Who Is the Company Behind Cloudbric?

Who Uses This Product?

  • Company Size: 50% Small, 36% Large

What Are Recent G2 Reviews of Cloudbric?

What Are G2 Users Discussing About Cloudbric?

Edgio

Edgio (NASDAQ: EGIO) helps companies deliver online experiences and content faster, safer, and with more control. Our developer-friendly, globally scaled edge network, combined with our fully integrated application and media solutions, provide a single platform for the delivery of high-performing, secure web properties, and streaming content. Through this fully integrated platform and end-to-end edge services, companies can deliver content quicker and more securely, boosting overall revenue and business value. All services run at the edge of our private, global network with 250 Tbps of bandwidth capacity. We process 5% of all web traffic and are rapidly growing. Edgio is trusted and relied on by TD Ameritrade, Plus500, Solvay Bank, Yahoo, Shoe Carnival, Canadian Hockey League, World Champion Fantasy, Mars Wrigley, Coach, and Kate Spade.

Average Rating: 4.1/5.0

Total Reviews: 19

How Do G2 Users Rate Edgio?

  • Ease of Setup: 7.9/10 (Category avg: 8.7/10)

Who Is the Company Behind Edgio?

  • Seller: Edgio
  • Year Founded: 2001
  • HQ Location: Scottsdale, Arizona
  • LinkedIn® Page: www.linkedin.com
    428 employees on LinkedIn®
  • Ownership: NASDAQ:LLNW
  • Total Revenue (USD mm): $200

Who Uses This Product?

  • Top Industries: Information Technology and Services
  • Company Size: 40% Large, 40% Medium

What Are Recent G2 Reviews of Edgio?

What Are G2 Users Discussing About Edgio?

Flowtriq

Flowtriq is a real-time DDoS detection and BGP mitigation platform built for hosting providers, game server operators, ISPs, and MSPs. It analyzes sFlow v5, NetFlow v5/v9, and IPFIX telemetry to detect attacks within one second and trigger automated mitigation through upstream scrubbing services or your own infrastructure. There are no hardware appliances to deploy, no traffic hairpinning, and no six-figure contracts. The platform deploys as a lightweight software agent that monitors your existing network telemetry. It establishes per-node traffic baselines using a sliding window p99 model and scores anomalies on a 0 to 100 confidence scale across seven attack families including DNS amplification, UDP floods, SYN floods, ICMP, HTTP floods, and multi-vector attacks. When a threshold is breached, Flowtriq orchestrates BGP-based mitigation through integrations with Cloudflare Magic Transit, Akamai, OVH VAC, Hetzner, or your own mitigation stack. It also integrates with PagerDuty for alerting, WHMCS and Pterodactyl for customer-facing dashboards, and routing platforms like MikroTik and pfSense for direct mitigation actions. Most DDoS detection platforms were designed for enterprises with dedicated NOC teams and enterprise budgets. Flowtriq was built from the ground up for operators who need sub-second detection without the overhead. It installs in under five minutes, starts building baselines immediately, and replaces the patchwork of open-source flow collectors and homegrown scripts that most operators rely on today. The platform supports L7 application-aware detection for nginx, Apache, Caddy, LiteSpeed, and HAProxy, and includes a 1,000-packet PCAP ring buffer for forensic capture after an incident. Flowtriq was born from real-world vulnerability research. The founding team discovered a critical vulnerability that enabled law enforcement to disrupt active botnet infrastructure globally, and built the detection engine around the attacker behavior patterns that research uncovered. In a documented case study, Flowtriq detected a multi-vector attack combining NTP amplification and SYN flood in 0.9 seconds and fully mitigated it in 11 seconds with zero disconnections during a live 240-person event. Flowtriq offers a 14-day free trial with no credit card required. Pricing starts at $9.99 per node per month, or $7.99 per node per month on an annual plan.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate Flowtriq?

  • IT Alerting: 10.0/10 (Category avg: 8.5/10)
  • Ease of Setup: 10.0/10 (Category avg: 8.7/10)

Who Is the Company Behind Flowtriq?

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of Flowtriq?

BitNinja

State-of-the-art server security with an all-in-one platform BitNinja offers an advanced server security solution with a proactive and unified system designed to effectively defend against a wide range of malicious attacks. Breaking new ground, BitNinja will be the first server security tool that protects Windows servers. Main solutions: - Reduce the server load as a result of the real-time IP reputation, with a database of 100M+ IP addresses thanks to BitNinja’s Defense Network - Stop zero-day exploits with the WAF module, and BitNinja’s self-written rules - Remove malware quickly and prevent reinfections with the industry-leader malware scanner - Enable the AI Malware Scanner to remove malware than ever before - Identify possible backdoors in your system with the Defense Robot - Protect your server from brute-force attacks with the Log Analysis module that runs silently in the background - Regularly examine and clean your database with the Database Cleaner - Discover and eliminate vulnerabilities in your website at no additional cost with the SiteProtection module - Block spam accounts, prevent server blocklisting, and gain insights into outgoing spam emails with the Outbound - Spam Detection module powered by ChatGPT - Trap suspicious connections with Honeypots and block access through backdoors with the Web Honeypot BitNinja Security stops the latest attack types, including: - All types of malware - with the best malware scanner in the market - Brute-force attacks at both network and HTTP levels; - Vulnerability exploitation – CMS (WP/Drupal/Joomla) - SQL injection - XSS - Remote code execution - Zero-day attacks; - DoS (denial of service) attacks BitNinja Security makes it easy to secure web servers: - 1-line code installation - Fully automated operation keeps servers safe and eliminates human error - AI-powered community-driven worldwide Defense Network - Unified, intuitive Dashboard for your whole infrastructure - Easy server management with Cloud Configuration - Premium support with a maximum 5-min response time - The convenience of a robust CLI - API available for automation and reporting - Seamless integrations with a wide range of platforms like Enhance control panel, 360 Monitoring, and JetBackup. BitNinja is supported on THE PLATFORM and up, installed on the following Linux distributions: CentOS 7 and up 64 bit CloudLinux 7 and up 64 bit Debian 8 and up 64 bit Ubuntu 16.04 and up 64 bit RedHat 7 and up 64 bit AlmaLinux 8 64 bit VzLinux 7 and up 64 bit Rocky Linux 8 64 bit Amazon Linux 2 64 bit Windows 2012 RE and newer

Average Rating: 4.6/5.0

Total Reviews: 20

How Do G2 Users Rate BitNinja?

  • Logging: 6.1/10 (Category avg: 8.4/10)
  • IT Alerting: 7.9/10 (Category avg: 8.5/10)
  • Website Protection: 9.0/10 (Category avg: 8.9/10)
  • Ease of Setup: 9.8/10 (Category avg: 8.7/10)

Who Is the Company Behind BitNinja?

Who Uses This Product?

  • Top Industries: Information Technology and Services, Internet
  • Company Size: 88% Small, 8% Medium

What Are Recent G2 Reviews of BitNinja?

What Are G2 Users Discussing About BitNinja?

CDN77.com

We deliver data to a billion unique users every day. With over a decade of expertise, cash-flow positivity, and sustained profitable growth, we are consistently ranked among the TOP 5 CDNs in the market. We deliver all types of content, but video is where we thrive; it accounts for 90% of our traffic. Our clients include live and VOD platforms such as Starz, Rakuten TV, Udemy, and Sport1, as well as some of the largest social media sites. Our flexibility and client-centric approach set us apart from other major CDN vendors, a distinction in which we take pride.

Average Rating: 4.8/5.0

Total Reviews: 69

How Do G2 Users Rate CDN77.com?

  • Ease of Setup: 9.4/10 (Category avg: 8.7/10)

Who Is the Company Behind CDN77.com?

  • Seller: CDN77.com
  • Year Founded: 2011
  • HQ Location: London, United Kingdom
  • LinkedIn® Page: www.linkedin.com
    126 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Internet
  • Company Size: 78% Small, 17% Medium

What Do G2 Reviewers Say About CDN77.com?

AI-generated summary from verified user reviews

Pros
  • Users appreciate the fast CDN performance of CDN77, experiencing quick uploads and downloads globally.
  • Users value the responsive customer support of CDN77.com, ensuring quick solutions for any issues encountered.
  • Users highlight the very easy setup of CDN77, appreciating the quick and problem-free configuration process.
  • Users appreciate the excellent service quality of CDN77.com, particularly noting its fast setup and reliable customer support.
  • Users enjoy the smooth performance of CDN77.com, appreciating its fast speeds and effortless setup for object storage.

What Are Recent G2 Reviews of CDN77.com?

Modshield SB

Modshield SB is a feature-rich, scalable and cost-effective application firewall, Modshield SB is designed to provide protection against all major attack vectors (OWASP Top 10 and more). It supports multiple domains and applications using a single instance with no additional license costs.

Who Is the Company Behind Modshield SB?

Netacea Bot Detection and Bot Management

Netacea Bot Protection is a specialized cybersecurity solution designed to detect and prevent sophisticated bot attacks targeting online brands. This innovative platform operates at the far edge of technical infrastructure, utilizing an agentless approach that ensures seamless integration without the need for additional software installations. By combining comprehensive visibility of all traffic across APIs, applications, and websites with advanced detection, response, and threat intelligence capabilities, Netacea provides businesses with robust automated protection against a variety of online threats. The target audience for Netacea Bot Protection includes large online retailers, financial institutions, and any organization that relies heavily on digital transactions and user interactions. These businesses face significant risks from automated threats, including brute force attacks, account takeovers, credential stuffing, payment abuse, and various forms of online fraud. By implementing Netacea's solution, organizations can safeguard their digital assets and maintain the integrity of their user experience, ultimately protecting their reputation and bottom line. One of the key features of Netacea Bot Protection is its low-code, agentless deployment, which simplifies the implementation process for businesses. This approach allows organizations to analyze all traffic sources across web, app, and API environments, enabling them to detect and mitigate automated threats before they can inflict damage. The system's evolved detection capabilities leverage sophisticated algorithms and machine learning to identify malicious bot behavior, ensuring that only legitimate traffic is allowed through. Additionally, Netacea's threat intelligence capabilities provide users with valuable insights into emerging threats and attack patterns. This information empowers businesses to stay ahead of potential risks and adapt their security measures accordingly. The combination of real-time monitoring and proactive threat response ensures that organizations can effectively manage their online security posture, minimizing the impact of bot attacks on their operations. By offering a comprehensive suite of features tailored to the needs of highly trafficked businesses, Netacea Bot Protection stands out in the cybersecurity landscape. Its focus on visibility, detection, and response equips organizations with the tools necessary to combat the evolving threat landscape, making it an essential component of any robust online security strategy.

Average Rating: 4.6/5.0

Total Reviews: 23

How Do G2 Users Rate Netacea Bot Detection and Bot Management?

  • Ease of Setup: 8.2/10 (Category avg: 8.7/10)

Who Is the Company Behind Netacea Bot Detection and Bot Management?

  • Seller: Netacea
  • Year Founded: 2018
  • HQ Location: Manchester, England
  • LinkedIn® Page: www.linkedin.com
    41 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Retail
  • Company Size: 52% Medium, 43% Large

What Do G2 Reviewers Say About Netacea Bot Detection and Bot Management?

AI-generated summary from verified user reviews

Pros
  • Users commend the exceptional customer support from Netacea, highlighting their responsiveness and effectiveness in resolving issues.
  • Users commend the exceptional customer service of Netacea, noting their responsiveness and support during critical issues.
  • Users value the effective bot mitigation of Netacea, supported by excellent customer service and seamless transitions.
  • Users highlight the implementation ease of Netacea, appreciating the seamless transition and swift response during critical situations.
  • Users commend Netacea for its effective bot protection and exceptional customer support during transitions and challenges.
Cons
  • Users feel that there is limited customization in the management console, indicating a need for more features.
  • Users feel the management console has limited features but are generally satisfied with the service overall.

What Are Recent G2 Reviews of Netacea Bot Detection and Bot Management?

What Are G2 Users Discussing About Netacea Bot Detection and Bot Management?

TotalHeal WebShield

TotalHeal WebShield is the Web Application Firewall (WAF) product of TotalHeal, the security platform made in India by Freaquer Corporation Private Limited. Protect your websites and web apps at the edge, learning first and blocking when you are ready. It is managed from the TotalHeal console together with the other TotalHeal products, under one account and one bill. TotalHeal is available as a cloud service and for on-premises deployment. Every organisation can start a 30-day free trial from the console.

Who Is the Company Behind TotalHeal WebShield?

Lauren Worth
LW
Researched and written by Lauren Worth
Updated November 12, 2024