Best Free Zero Trust Security Software
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Compare the Top Free Zero Trust Security Software as of October 2025
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What is Free Zero Trust Security Software?
Zero trust security software, also known as zero trust networking software, provides a security solution based on the zero trust methodology. Zero trust security solutions enable organizations to enforce security policies on a "zero trust" basis for both internal and external users, and allow security teams to track, monitor, and analyze user behavior and usage across the network to identify potential threats. Compare and read user reviews of the best Free Zero Trust Security software currently available using the table below. This list is updated regularly.
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1
ManageEngine Endpoint Central
ManageEngine
ManageEngine Endpoint Central is built to secure the digital workplace while also giving IT teams complete control over their enterprise endpoints. It delivers a security-first approach by combining advanced endpoint protection with comprehensive management, allowing IT teams to manage the entire endpoint lifecycle, all from a single console. With automated patching across Windows, Mac, Linux and 1,000+ third-party applications, it ensures vulnerabilities are mitigated before attackers can exploit them. Its next-gen antivirus (NGAV) feature, powered by AI-driven behavioural detection, provides 24/7 protection against ransomware, malware, and zero-day threats. Endpoint Central further strengthens enterprise defenses with a broad set of security capabilities, including vulnerability assessment and mitigation, peripheral device control, data loss prevention, application control, endpoint privilege management, encryption with FileVault and BitLocker, and browser security.Starting Price: $795.00/one-time -
2
Google Chrome Enterprise
Google
Chrome Enterprise is a suite of business offerings that includes Chrome browser, Chrome's cloud management tool Chrome Enterprise Core, and the advanced security capabilities in Chrome Enterprise Premium. Chrome offers a dedicated enterprise download bundle, giving admins access to additional resources and policy templates for managing Chrome across desktop environments in their organization. Chrome Enterprise Core provides admins with simple, centralized management from the cloud. It allows admins to manage their enterprise browser deployment across platforms all from the same place. Chrome Enterprise Premium enables secure access to applications and resources, and offers integrated threat and data protection in the browser. It adds an extra layer of security to safeguard your Chrome browser environment, including DLP, real-time URL and file scanning, and context aware access for SaaS and web apps.Starting Price: Free -
3
Auth0
Okta
Auth0 takes a modern approach to Identity, providing secure access to any application, for any user. Safeguarding billions of login transactions each month, Auth0 delivers convenience, privacy, and security so customers can focus on innovation. Auth0 is part of Okta, The World’s Identity Company™. Auth0 lets you quickly integrate authentication and authorization for web, mobile, and legacy applications, with new Fine Grained Authorization (FGA) that goes beyond role-based access control. Authenticate users across all applications with a customized, secure, and standards-based single login. Universal Login connects users to a central authorization server. Credentials aren’t transferred across sources, which boosts security and protects against phishing and credential stuffing attacks. OAuth 2.0 recommends that only external user agents (like the browser) be used by native applications for authentication flows. Auth0’s Universal Login achieves this while enabling SSO.Starting Price: Free plan -
4
OpenVPN
OpenVPN
Transition to a Zero Trust framework with OpenVPN Access Server. Our self-hosted solution gives businesses of all sizes the ability to enforce zero trust essentials. Transition beyond protecting only what is inside of your corporate perimeter, and reduce your attack surface. With Access Server, you can protect workers using home and public WiFi networks, and SaaS applications, outside your network perimeter. We also provide all the tools and capabilities necessary for building a strong zero trust network to block or significantly mitigate attacks.Starting Price: Free Up to 3 Users -
5
Kasm Workspaces
Kasm Technologies
Kasm Workspaces streams your workplace environment directly to your web browser…on any device and from any location. Kasm uses our high-performance streaming and secure isolation technology to provide web-native Desktop as a Service (DaaS), application streaming, and secure/private web browsing. Kasm is not just a service; it is a highly configurable platform with a robust developer API and devops-enabled workflows that can be customized for your use-case, at any scale. Workspaces can be deployed in the cloud (Public or Private), on-premise (Including Air-Gapped Networks or your Homelab), or in a hybrid configuration.Starting Price: $0 Free Community Edition -
6
ManageEngine ADSelfService Plus
ManageEngine
ADSelfService Plus is an on-premises access management solution that caters to businesses across various industries, such as IT, banking, engineering, education, aviation, and telecommunications. Key features include: 1. Self-service password resets and account unlocks: Users can reset their passwords in AD and unlock their domain accounts from a web browser. 2. MFA: Machine logins, VPN and OWA logins, and cloud app logins can be secured using MFA. 3. Password synchronizer and SSO: Users can log in to multiple apps using one unified identity via SSO and real-time password synchronization. 4. Password policy enforcer: Admins can configure custom password policies to enforce strong password creation. 5. Password expiration notifier: Admins can send end users password expiration notifications via SMS or email. 6. Directory self-update: Users can update their AD attribute information through the directory self-update feature.Starting Price: $595 for 500 domain users/year -
7
SparkView
beyond SSL
Fast, secure and reliable remote access to desktops, applications and servers. SparkView offers a simple and secure way to connect untrusted devices to your desktops and applications. The ZTNA solution with no installation on the client provides secure remote access from any device with a browser. All via HTML5 technology. The solution for remote office / mobile work and home office. Best web RDP client - advantages of SparkView: - ZTNA compliant remote access to applications, desktops and servers - Access from any device with browser (e.g. Chrome, Firefox, Edge, Opera, Safari, etc.) - No installation on clients or the target systems - One central point for administration, security and authorization - HTML5 technology - Flexible, stable and scalable - Low support and management overhead - Supports common protocols such as RDP, SSH, Telnet, VNC and HTTP(S) - No Java, no Flash, no ActiveX, no plugin, no rolloutStarting Price: $60 per year -
8
Cisco Duo
Cisco
Cisco Duo is a cloud-based identity security solution that protects organizations from identity-based threats and boosts workforce productivity. Trusted by over 40,000 organizations worldwide, Duo delivers an exceptional access management experience across all users, devices, and applications, making access to resources secure, seamless, and easy. Duo with Cisco Identity Intelligence provides deep visibility across your identity ecosystem, adding a powerful security layer to any identity infrastructure. Offer users a world-class access experience through Duo Passport to eliminate MFA friction and fatigue without sacrificing security. To stop threats, Duo verifies user identities with strong authenticators including Duo passwordless, Verified Duo Push with number matching, and phishing-resistant factors like biometrics and FIDO2 security keys. Paired with deep insights into users’ devices, Duo gives you the control to adaptively limit access based on device health or user risk.Starting Price: $3 per user per month -
9
Cloudflare
Cloudflare
Cloudflare is the foundation for your infrastructure, applications, and teams. Cloudflare secures and ensures the reliability of your external-facing resources such as websites, APIs, and applications. It protects your internal resources such as behind-the-firewall applications, teams, and devices. And it is your platform for developing globally scalable applications. Your website, APIs, and applications are your key channels for doing business with your customers and suppliers. As more and more shift online, ensuring these resources are secure, performant and reliable is a business imperative. Cloudflare for Infrastructure is a complete solution to enable this for anything connected to the Internet. Behind-the-firewall applications and devices are foundational to the work of your internal teams. The recent surge in remote work is testing the limits of many organizations’ VPN and other hardware solutions.Starting Price: $20 per website -
10
Okta
Okta
One platform, infinite ways to connect to your employees and customers. Build auth into any app. Create secure, delightful experiences quickly by offloading customer identity management to Okta. Get security, scalability, reliability, and flexibility by combining Okta’s Customer Identity products to build the stack you need. Protect and enable your employees, contractors, and partners. Secure your employees—wherever they are—with Okta’s workforce identity solutions. Get the tools to secure and automate cloud journeys, with full support for hybrid environments along the way. Companies around the world trust Okta with their workforce identity. -
11
Mamori Server
Mamori.io
Mamori Server is an all-in-one data security solution that integrates ZTNA, 2FA, DAM, PAM, SQL Firewall and data privacy solutions. It uses Zero Trust security to protect business data, which prevents cyber attacks and data theft, helps meet compliance and cyber insurance requirements, and simplify DevOps & access to resources. Mamori Server is extremely simple to deploy. No agents required. No changes to servers, directories, or databases required. Mamori Server can be deployed in the cloud or on-premise, and can be self-hosted or as a managed cloud service. For businesses with under 20 staff, Mamori Server can be used for free.Starting Price: $120/month/user -
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ZeroTier
ZeroTier
ZeroTier simplifies global networking with a secure network overlay that connects and manages all your resources as if they were on the same LAN. Deployable in minutes from anywhere, our software-defined solution scales effortlessly, whether you’re connecting a handful of devices or an entire global network. With ZeroTier, you can: Establish private global networks for IoT deployments. Simplify networking across physical locations with software-defined solutions. Replace traditional VPNs to provide employees secure access to critical resources. Experience seamless connectivity and robust security with ZeroTier – the smarter way to network globally.Starting Price: $2/device per month -
13
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. -
14
InstaSafe
InstaSafe Technologies
InstaSafe is redefining the challenge of secure access to modern networks by leveraging Zero Trust principles with its security solutions, that ensure seamless access to cloud applications, SAP applications, on-premise data, IoT devices, and multiple other neoteric use cases. InstaSafe discards traditional VPN based conceptions of a network perimeter, instead moving the perimeter to the individual users and the devices they access. The Zero Trust approach followed by InstaSafe mandates a “never trust, always verify' approach to privileged access, without focusing on network locality. InstaSafe ZTAA relies on continuously assessing the trust and risk associated with every user, and the context of their access request, and simultaneously employs a system of comprehensive authentication before grnating least privilege access. By only making authorised applications accessible to the user, and not exposing the network to these users, ZTAA serves to negate the exploitable attacks surfaceStarting Price: $8/user/month -
15
Simply5 CloudLAN
Simply5
CloudLAN is a secure virtual office for a distributed teams. CloudLAN helps bring all the user computers into a single virtual network & accessible to each other through private IP's from anywhere. TeamVPN IP gives a roaming Static IP that is no longer tied to a physical locations internet connection. Addon features like service casting & Host connect makes remote work accessible to even companies without inhouse technical team.Starting Price: $19 -
16
Banyan Security
Banyan Security
Secure app & infrastructure access, purpose-built for enterprises. Banyan replaces your traditional network access boxes, VPNs, bastion hosts, and gateways, with a cloud-based zero trust access solution. One-click infra access, never expose private networks. Dead simple setup, high-performance connectivity. Automate access to critical services, without exposing private networks. One-click access to SSH/RDP, Kubernetes, and database environments, including hosted applications like GitLab, Jenkins, and Jira. CLI, too! Collaborate across on-premises and cloud environments, without complex IP whitelisting. Automate deployment, onboarding, and management with tag-based resource discovery & publishing. Simple cloud-delivered user-to-application (not network) segmentation, optimized for availability, scale, and ease of management. Superior user experience supports agentless, BYOD, and passwordless scenarios with one-click access via service catalog.Starting Price: $5 per user per month -
17
Twingate
Twingate
The way we work has changed. People now work from anywhere, not just from an office. Applications are based in the cloud, not just on-premise. And the company network perimeter is now spread across the internet. Using a traditional, network-centric VPN for remote access is not only outdated and difficult to maintain, but exposes businesses to security breaches. VPN infrastructure is costly and time-consuming to procure, deploy, and maintain. Inability to secure access at the app level means hacks can expose whole networks. Twingate enables organizations to rapidly implement a modern Zero Trust network that is more secure and maintainable than VPNs. Delivered as a cloud-based service, Twingate empowers IT teams to easily configure a software-defined perimeter without changing infrastructure, and centrally manage user access to internal apps, whether they are on-prem or in the cloud.Starting Price: $10 per user per month -
18
Fudo Security
Fudo Security
With Fudo, users can get access to Unix/Windows servers, applications, and devices quickly and easily. Users will not have to change their habits and can continue to use native clients like Unix Terminals, RDCMan, or Putty. They can also connect through the Fudo Web Client which only needs a web browser for access. Using the JIT feature, you can create access workflows that adhere to the zero-trust approach. Through the request management section, you can easily define and schedule when a specific resource is available to a certain user and control it accordingly. Fudo allows you to permanently monitor and record all the ongoing sessions for 10+ protocols, including SSH, RDP, VNC, and HTTPS. You can watch the session live or use the footage for post-mortem analysis. Both the server and end-user computers do not require any agents. Furthermore, Fudo offers the ability to join the session, sharing, pausing, and terminate, as well as great tools like OCR and tagging.Starting Price: Free -
19
XplicitTrust Network Access
XplicitTrust
XplicitTrust Network Access is a Zero Trust Network Access (ZTNA) solution that provides secure, seamless access to applications regardless of location for users working from anywhere. It provides identity-based access control that integrates with existing identity providers for single sign-on (SSO) and multi-factor authentication (MFA) using factors such as user identity, device security, location and time. The platform includes real-time network diagnostics and centralized asset management for better oversight. Clients require no configuration and the solution is compatible with platforms including Windows, MacOS and Linux. XplicitTrust uses strong encryption, end-to-end protection, automatic key rotation and context-aware authentication to provide robust security. It also supports scalable application access and secure connections for IoT, legacy applications and remote desktops, making it versatile for today's security needs.Starting Price: $5/month/user -
20
Tempered
Tempered
The network you want over the network you have. Fast and easy to deploy & maintain. No forklifts required. Protect critical assets and unpatchable IoT devices with a segmented virtual air gap. Securely connect any device or network across public, private, cloud, & mobile networks. Stop lateral movement from bringing your network down. Ditch internal firewalls and complex VLANs & ACLs. Replace expensive MPLS links with more cost efficient SDWAN capabilities. Simplify remote access for employees & vendors, hybrid cloud connectivity and multi-cloud transport, replace expensive MPLS network connections (SDWAN), isolate and protect critical process controls and devices, securely share device data with the cloud analytics, provide safe vendor access to sensitive industrial networks, segment networks for enhanced security and ransomware protection. -
21
Cloudflare Zero Trust
Cloudflare
Stop data loss, malware and phishing with the most performant Zero Trust application access and Internet browsing platform. The traditional tools used to connect employees to corporate apps grant excessive trust, exposing you to potential data loss. The corporate perimeter has become more difficult to control with complex, conflicting configurations across your VPNs, firewalls, proxies, and identity providers. It’s never been harder to parse out logs, and make sense of how users access sensitive data. Your employees, partners, and customers need a network that is secure, fast and reliable to get work done. Cloudflare Zero Trust replaces legacy security perimeters with our global edge, making the Internet faster and safer for teams around the world. Enforce consistent access controls across cloud, on-premise and SaaS applications.Starting Price: $7 per user per month -
22
Cloudflare Access
Cloudflare
Enforce default-deny, Zero Trust rules for users accessing any application, in any on-premise private network, public cloud, or SaaS environment. Connects users faster and more safely than a VPN and integrates flexibly with your identity providers and endpoint protection platforms. Try it forever for up to 50 users with our Free plan. Granular application access control without lateral movement. Users can seamlessly access the resources they need and are blocked from those they do not. Cloudflare is both identity and application agnostic, allowing you to protect any application, SaaS, cloud, or on-premises with your preferred identity provider. Before you grant access, evaluate device posture signals including presence of Gateway client, serial number, and mTLS certificate, ensuring that only safe, known devices can connect to your resources.Starting Price: $7 per user per month -
23
FerrumGate
FerrumGate
FerrumGate is an Open source Zero Trust Network Access (ZTNA) project, that uses advanced identity and access management technologies to ensure secure access to your network and applications. With multi-factor authentication, continuous monitoring, and granular access controls. You can use it for Secure remote access, Cloud security, Privileged access management, Identity and access management, Endpoint security, IOT connectivity. -
24
Teleport
Teleport
The Teleport Infrastructure Identity Platform modernizes identity, access, and policy for infrastructure, for both human and non-human identities, improving engineering velocity and resiliency of critical infrastructure against human factors and/or compromise. Teleport is purpose-built for infrastructure use cases and implements trusted computing at scale, with unified cryptographic identities for humans, machines and workloads, endpoints, infrastructure assets, and AI agents. Our identity-everywhere approach vertically integrates access management, zero trust networking, identity governance, and identity security into a single platform, eliminating overhead and operational silos. -
25
FireMon
FireMon
Maintaining a strong security and compliance posture requires comprehensive visibility across your entire network. See how you can gain real-time visibility and control over your complex hybrid network infrastructure, policies and risk. Security Manager provides real-time visibility, control, and management for network security devices across hybrid cloud environments from a single pane of glass. Security Manager provides automated compliance assessment capabilities that help you validate configuration requirements and alert you when violations occur. Whether you need audit reports ready out-of-the-box or customizable reports tailored to your unique requirements, Security Manager reduces the time you spend configuring policies and gives you the confidence that you’re ready to meet your regulatory or internal compliance audit demands.
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