Software Category

Best Free Network Security Software

Free Network Security Software provides essential tools to protect your network from cyber threats, ensuring the safety of sensitive data and maintaining overall network integrity. These network security software solutions offer features like firewalls, intrusion detection, and vulnerability scanning, helping businesses safeguard their infrastructure from malicious attacks. By leveraging free network security tools, organizations can implement robust network and security solutions to prevent unauthorized access and ensure compliance with security standards. Whether you're looking for advanced network security applications to tackle complex threats or simpler tools for basic security, these free options deliver the necessary protection without the added cost. Explore our curated list of top free network security software to find the right solution for your business and strengthen your network defenses with powerful, cost-effective software designed to ensure the security of your network assets.

Note: Most of the products listed in this free network security software category offer free trial versions, though they have restrictions like time limits, fixed number of users, or limited features. For more options and features, compare and evaluate all-time network security software to find the best fit for you.
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★★★★★4.7 average rating from 108 reviews
Last Updated: October 09, 2026
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Popular Picks in Network Security Software

Complete Product Directory

List of Top Free Network Security Software

Review each product’s overview, then open available tabs for buyer fit, use cases, features, integrations, pros and cons, and pricing.

Best Free Network Security Software Products

Overview is available for every product. Additional tabs appear only when matching profile information exists.

25 products shown
#1

Unified IT operations platform designed to achieve full-stack observability

★★★★☆ 4.3 (1 Reviews)

Overview

ManageEngine OpManager Nexus (formerly OpManager Plus) is an observability software that offers comprehensive network monitoring and performance management for IT infrastructure. It provides real-time visibility into network devices, servers, applications, and virtual environment...

Read more about ManageEngine OpManager Nexus  
Free TrialAvailable Starting PriceContact Vendor HeadquartersUnited States
#2

Duo Security

🏆 SW Recommended

Multi-Factor Authentication & Single Sign-On

★★★★★ 5.0 (2 Reviews)

Overview

Duo Security, now a part of Cisco, is a leading multi-factor authentication (MFA) and secure access solution. It's designed to protect organizations by ensuring only legitimate users and secure devices have access to sensitive data. Duo's simplicity is a standout feature, offerin...

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Free Trial30 Days Starting Price$3 Per month HeadquartersUnited States
#3

ZoneAlarm Pro

🏆 SW Recommended
★★★★★ 5.0 (2 Reviews)

Overview

ZoneAlarm Pro is a network security software that provides advanced protection against cyber threats. It offers a powerful firewall, antivirus, and anti-spyware features to safeguard computers from malware, hacking, and other online risks. ZoneAlarm Pro includes identity protecti...

Read more about ZoneAlarm Pro  
Free TrialAvailable Starting PriceContact Vendor HeadquartersUnited States
#4

Webroot DNS Protection

🏆 SW Recommended
★★★★★ 5.0 (2 Reviews)

Overview

Webroot DNS Protection is an advanced network security software designed to safeguard organizations against a variety of online threats. This platform offers real-time protection through DNS filtering, blocking access to malicious websites and preventing data breaches before they...

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Free TrialAvailable Starting PriceContact Vendor HeadquartersCanada
#5

Norton Secure VPN

🏆 SW Recommended

Enjoy the content you love with the privacy you need.

★★★★★ 5.0 (2 Reviews)

Overview

Norton Secure VPN is a powerful VPN software designed to protect users' online privacy and security while browsing the internet. This platform encrypts internet connections, safeguarding personal data from potential threats such as hackers, malware, and data snoopers. With Norton...

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Free Trial14 Days Starting Price₹499.00 Per year HeadquartersUnited States
#6

Netskope Active Platform

🏆 SW Recommended
★★★★★ 5.0 (2 Reviews)

Overview

Netskope Active Platform is an advanced network security software designed to protect organizations from cyber threats while ensuring secure access to data and applications. This platform provides comprehensive tools for managing cloud security, data protection, and threat detect...

Read more about Netskope Active Platform  
Free TrialAvailable Starting PriceContact Vendor HeadquartersUnited States
#7

DataDome

🏆 SW Recommended

Assess intent and regain control of your traffic—human, bot, and agent.

★★★★★ 5.0 (2 Reviews)

Overview

DataDome is a powerful endpoint protection software designed to safeguard businesses from cyber threats such as bot attacks, malware, and data breaches. The platform provides real-time monitoring and protection for all devices connected to the network, ensuring that endpoints are...

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Free TrialAvailable Starting PriceContact Vendor HeadquartersFrance
#8

SpamTitan

🏆 SW Recommended

Cybersecurity solutions to protect your business

★★★★★ 5.0 (2 Reviews)

Overview

SpamTitan is a robust antispam software solution designed to protect businesses from unwanted email threats, ensuring a secure and efficient email communication environment. This platform employs advanced filtering techniques to block spam, phishing attempts, and malware, allowin...

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Free TrialAvailable Starting PriceContact Vendor HeadquartersIreland
#9

Syncro

🏆 SW Recommended

Run All Your IT From One Secure Platform

★★★★★ 5.0 (2 Reviews)

Overview

Running an MSP usually means bouncing between four or five disconnected subscriptions, one for monitoring, another for ticketing, another for security, another for billing. Syncro exists to collapse that stack, a unified IT management and security platform built for MSPs and IT d...

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Free Trial14 Days Starting Price$129 Per month HeadquartersUnited States
#10

WatchGuard Firebox

🏆 SW Recommended
★★★★★ 5.0 (1 Reviews)

Overview

WatchGuard Firebox is a cutting-edge network security software designed to protect businesses from cyber threats. The platform offers advanced firewall capabilities, intrusion prevention, antivirus protection, and content filtering to secure networks from attacks. With WatchGuard...

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Free TrialAvailable Starting PriceContact Vendor HeadquartersUnited States
#11

MailWasher

🏆 SW Recommended
★★★★★ 5.0 (1 Reviews)

Overview

MailWasher is a popular anti-spam software designed to help users filter unwanted emails before they reach their inbox. It allows users to preview emails on the server, identify spam, and delete suspicious messages before downloading them. MailWasher’s advanced filtering technolo...

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Free TrialAvailable Starting PriceContact Vendor HeadquartersNew Zealand
#12

GeeTest CAPTCHA

🏆 SW Recommended

Leading Bot Management Platform

★★★★★ 5.0 (1 Reviews)

Overview

GeeTest CAPTCHA is an advanced website security software designed to protect online platforms from bots and fraudulent activities. This platform offers innovative CAPTCHA solutions that enhance user experience while ensuring robust security measures. With features such as interac...

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Free TrialAvailable Starting Price$3000 Per year HeadquartersChina
#13

Avast Ultimate Business Security

🏆 SW Recommended

Get your business security automated

★★★★☆ 4.9 (2 Reviews)

Overview

Avast Ultimate Business Security is a comprehensive software suite developed to address the diverse cybersecurity needs of businesses. It excels in delivering layered protection with its advanced antivirus, capable of thwarting viruses, malware, and ransomware. Unique to this sof...

Read more about Avast Ultimate Business Security  
Free Trial30 Days Starting Price$48.33 Per year HeadquartersCzech Republic
#14

WebTitan

🏆 SW Recommended
★★★★☆ 4.9 (2 Reviews)

Overview

WebTitan is a powerful website monitoring software designed to provide businesses with robust web filtering and security solutions. It helps organizations monitor and control internet usage across their networks, ensuring that employees access only approved websites and content....

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Free TrialAvailable Starting Price$3.74 Per user HeadquartersIreland
#15

Xeams

🏆 SW Recommended
★★★★☆ 4.9 (2 Reviews)

Overview

Xeams is an advanced cybersecurity software designed to protect organizations from email-based threats and enhance overall security posture. This platform provides comprehensive tools for spam filtering, phishing protection, and email archiving, ensuring that sensitive informatio...

Read more about Xeams  
Free TrialAvailable Starting PriceContact Vendor HeadquartersUnited States
#16

Lansweeper

🏆 SW Recommended

Cyber Asset Intelligence Platform

★★★★☆ 4.8 (2 Reviews)

Overview

Lansweeper is an asset management software that excels in discovering and inventorying network-connected devices, offering a comprehensive view of an organization's IT infrastructure. Its standout feature is the ability to scan and catalog various assets, including hardware, soft...

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Free TrialAvailable Starting Price€219 Per month HeadquartersBelgium
#17

Google Cloud

🏆 SW Recommended

All the tools you need to streamline your cloud.

★★★★☆ 4.7 (50 Reviews)

Overview

Google Cloud offers a suite of powerful cloud computing services designed to help businesses innovate and scale. Its scalable infrastructure provides reliable storage and computing power for applications of any size. With advanced machine learning capabilities, businesses can ext...

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Free TrialNA Starting PriceContact Vendor HeadquartersUnited States
#18

Nessus

🏆 SW Recommended
★★★★☆ 4.7 (11 Reviews)

Overview

Nessus is a leading vulnerability management software renowned for its comprehensive scanning capabilities and user-friendly interface. Designed for IT security professionals, Nessus helps organizations identify vulnerabilities, misconfigurations, and compliance issues across the...

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Free TrialAvailable Starting Price$4000.2 Per one-time HeadquartersUnited States
#19

Automated Network Configuration and Change Management (NCCM)

★★★★☆ 4.6 (2 Reviews)

Overview

ManageEngine Network Configuration Manager is an advanced compliance software designed to help organizations manage network configurations and maintain compliance with industry standards and regulations. This platform provides tools for tracking and documenting network configurat...

Read more about ManageEngine Network Configuration Manager  
Free TrialAvailable Starting Price$238 Per year HeadquartersUnited States
#20

PhishingBox

🏆 SW Recommended
★★★★☆ 4.6 (2 Reviews)

Overview

PhishingBox is an advanced cybersecurity software solution designed to protect organizations from phishing attacks and other online threats. With its robust suite of tools, PhishingBox enables businesses to simulate phishing attacks, educate employees, and assess vulnerabilities...

Read more about PhishingBox  
Free TrialAvailable Starting Price$50 Per month HeadquartersUnited States
#21

Qualys Cloud Platform

🏆 SW Recommended

Protect Your LLMs and GenAl

★★★★☆ 4.5 (2 Reviews)

Overview

Qualys Cloud Platform is a leading vulnerability management software that provides organizations with comprehensive visibility into their security posture. This cloud-based solution enables users to identify, assess, and remediate vulnerabilities across their IT environments, inc...

Read more about Qualys Cloud Platform  
Free TrialAvailable Starting PriceContact Vendor HeadquartersUnited States
#22

SentinelOne

🏆 SW Recommended

World-Leading Cybersecurity. Powered by AI.

★★★★☆ 4.5 (2 Reviews)

Overview

SentinelOne is a leading Endpoint Protection Software designed to safeguard businesses against a wide range of cyber threats, including malware, ransomware, and advanced persistent threats (APTs). This robust platform leverages artificial intelligence and machine learning to prov...

Read more about SentinelOne  
Free TrialAvailable Starting Price$179.99 Per feautre HeadquartersUnited States
#23

JumpCloud

🏆 SW Recommended

The Cross-OS Device, Identity, and Access Management Security Platform

★★★★☆ 4.5 (2 Reviews)

Overview

JumpCloud is a dynamic identity and access management software designed to streamline and secure user access across various systems and applications. It stands out with its Directory-as-a-Service feature, which centralizes and simplifies user management, regardless of location or...

Read more about JumpCloud  
Free Trial30 Days Starting Price$11 Per month HeadquartersUnited States
#24

Lookout

🏆 SW Recommended

Secure the Human Layer. Contain the Mobile Threat.

★★★★☆ 4.5 (1 Reviews)

Overview

Lookout is an advanced cybersecurity software solution designed to protect mobile devices and sensitive data from evolving cyber threats. This platform offers comprehensive security features, including malware detection, data encryption, and secure browsing, ensuring users can op...

Read more about Lookout  
Free TrialAvailable Starting PriceContact Vendor HeadquartersUnited States
#25

UTunnel VPN

🏆 SW Recommended
★★★★☆ 4.5 (1 Reviews)

Overview

UTunnel VPN is a network access control software designed to provide businesses with secure and private internet connectivity. The platform allows organizations to create virtual private networks (VPNs) to protect sensitive data, ensure secure remote access, and safeguard against...

Read more about UTunnel VPN  
Free TrialAvailable Starting Price$6 Per user HeadquartersUnited States

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