Compare the Top Free Network Access Control (NAC) Software as of November 2025

What is Free Network Access Control (NAC) Software?

Network access control (NAC) software provides companies with a security platform to manage sensitive data access through a network connection. Compare and read user reviews of the best Free Network Access Control (NAC) software currently available using the table below. This list is updated regularly.

  • 1
    Portnox Security

    Portnox Security

    Portnox Security

    Portnox CLEAR is the only cloud-native network access control (NAC) solution that unifies essential network and endpoint security capabilities: device discovery, network authentication, access control, network hardware administration, risk mitigation and compliance enforcement. As a cloud service, Portnox CLEAR eliminates the need for on-going maintenance such as upgrades and patches and requires no on-site appliances. As such, the platform can be easily deployed, scaled and managed by lean, resource-constrained IT teams across any corporate network - no matter how complex.
  • 2
    Genian NAC

    Genian NAC

    GENIANS

    Genians delivers a cybersecurity platform that ensures full network surveillance for all connected devices and provides dynamic access control to maintain compliance with IT security policies. It then leverages automation to orchestrate an organization’s entire security portfolio in concert with Device Platform Intelligence, Network Access Control (NAC), and Endpoint Detection and Response (EDR) to achieve an optimally-secure network edge. Genians Network Access Control (NAC) can secure every single connecting point in various networking environments such as VPN, xDSL, and 5G, while ensuring least-privilege access, multifactor authentication (MFA), and micro-segmentation. It can also enhance any enterprise’s Secure Access Service Edge (SASE) architecture. Genians secures millions of various endpoints in organizations of all sizes and industries, including global Fortune 500 companies, the government, the military, energy, finance, healthcare, education, and more.
    Starting Price: $0.2 to 1 per Active Device
  • 3
    TekRADIUS

    TekRADIUS

    KaplanSoft

    TekRADIUS is a RADIUS server for Windows with built-in DHCP server. TekRADIUS is tested on Microsoft Windows Vista, Windows 7-11 and Windows 2008-2022 server. TekRADIUS complies with RFC 2865 and RFC 2866. TekRADIUS also supports TCP (RFC 6613) and TLS (RFC 6614-RadSec) transports. TekRADIUS has three editions; TekRADIUS (First edition; supports Microsoft SQL Server) and TekRADIUS LT (Supports SQLite database) and TekRADIUS OD (Supports MySQL, MariaDB, PostgreSQL and Oracle databases through ODBC). It runs as a Windows Service and comes with a Windows management interface.
    Starting Price: $239
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