The best alternatives to Perimeter 81

Cloudflare One is a unified SASE platform that connects and protects an organization's workforce, AI agents, and infrastructure. It converges ZTNA, secure web gateway, CASB, DLP, email security, remote browser isolation, and network-as-a-service into a single control plane on a global network spanning 300+ cities.

GlobalProtect by Palo Alto Networks provides secure remote access for the hybrid workforce. It delivers identity-based access control, device trust enforcement, and consistent security policies across all applications — extending next-generation security to users everywhere, not just a traditional VPN.

NordLayer is a cloud-native network security platform by Nord Security that helps businesses secure connections, control access, and prevent threats. It provides business VPN, Zero Trust Network Access, threat protection, and threat intelligence in one toggle-ready solution.

Citrix Secure Private Access provides zero trust network access (ZTNA) to secure, deliver, and manage any application for any user on any device — both managed and unmanaged, on-premises and in the cloud. It replaces traditional VPNs with identity-aware, context-based access controls that reduce the attack surface.

Zscaler Private Access (ZPA) is a zero trust network access (ZTNA) solution that provides secure remote access to private applications. It connects authorized users directly to specific apps — never exposing the corporate network, reducing the attack surface, and preventing lateral movement.

Tailscale is a Zero Trust identity-based connectivity platform that replaces legacy VPNs with a secure mesh overlay network using WireGuard encryption. It connects remote teams, multi-cloud environments, CI/CD pipelines, Edge & IoT devices, and AI workloads — deploying in minutes and scaling across any infrastructure.

Firezone is an open-source zero-trust access platform built on WireGuard® that replaces traditional VPNs. It provides fast, scalable secure access to apps, services, and networks with simple policy-based controls, identity provider sync, and automatic load balancing.

Fortinet FortiClient is a unified Fabric Agent that delivers protection, compliance, and secure access in a single modular lightweight client. It provides ZTNA and VPN remote access, AI-based next-generation antivirus (NGAV), web filtering, CASB, vulnerability scanning, and endpoint visibility — all centrally managed through FortiClient EMS and integrated with the Fortinet Security Fabric.

Twingate is a Zero Trust Network Access (ZTNA) platform that replaces traditional VPNs with identity-based, least-privilege access. It provides secure remote access to private resources, deploys in minutes without recutting your network, and enforces granular security policies based on user identity, device posture, and context — all with no open inbound ports.

OpenVPN is a leading business VPN platform providing encrypted remote access through self-hosted (Access Server) or cloud-delivered (CloudConnexa) solutions. Trusted by over 20,000 organizations, it offers zero-trust controls, multi-factor authentication, kernel-accelerated performance, and cross-platform connectivity for hybrid workforces.