Top 10 Perimeter 81 Alternatives in 2026

Updated May 2026 · SASE & Zero Trust

Why Look for Alternatives?

Perimeter 81 is a popular choice in the SASE & Zero Trust space, but it is not the only option worth evaluating. Teams may seek alternatives due to pricing concerns, feature gaps, deployment constraints, or a need for open-source flexibility. The 10 SASE & Zero Trust tools below — ranked by community rating — cover the realistic replacement and complement scenarios you should consider before committing to Perimeter 81 for the long term.

Comparison Table

Tool Rating Pricing Open Source Best For
1. Cloudflare Zero Trust 4.6/5 Freemium N budget-conscious teams needing SASE & Zero Trust
2. Zscaler Internet Access 4.6/5 Enterprise N enterprise teams needing SASE & Zero Trust
3. Illumio Zero Trust 4.5/5 Enterprise N enterprise teams needing SASE & Zero Trust
4. Netskope 4.5/5 Enterprise N enterprise teams needing SASE & Zero Trust
5. Palo Alto Prisma Access 4.5/5 Enterprise N enterprise teams needing SASE & Zero Trust
6. Tailscale Mesh VPN 4.5/5 Freemium N budget-conscious teams needing SASE & Zero Trust
7. Cato Networks SASE 4.4/5 Enterprise N enterprise teams needing SASE & Zero Trust
8. Twingate ZTNA 4.4/5 Freemium N budget-conscious teams needing SASE & Zero Trust
9. Appgate SDP 4.3/5 Enterprise N enterprise teams needing SASE & Zero Trust
10. Grip Security SSPM 4.3/5 Enterprise N enterprise teams needing SASE & Zero Trust

Top 10 Perimeter 81 Alternatives

1. Cloudflare Zero Trust

4.6/5

Freemium

Comprehensive zero-trust platform with ZTNA, SWG, CASB, email security and browser isolation.

2. Zscaler Internet Access

4.6/5

Enterprise

Cloud-native secure web gateway with AI-powered threat prevention and zero trust architecture.

3. Illumio Zero Trust

4.5/5

Enterprise

Zero-trust segmentation preventing lateral movement with AI-powered visibility and micro-segmentation.

4. Netskope

4.5/5

Enterprise

SASE platform with AI-powered data protection inline CASB and zero trust network access.

5. Palo Alto Prisma Access

4.5/5

Enterprise

Cloud-delivered SASE with AI-powered security autonomous digital experience management.

6. Tailscale Mesh VPN

4.5/5

Freemium

WireGuard-based mesh VPN creating zero-trust networks with minimal configuration.

7. Cato Networks SASE

4.4/5

Enterprise

Single-vendor SASE platform converging networking and security with AI threat prevention.

8. Twingate ZTNA

4.4/5

Freemium

Modern zero-trust network access replacing VPNs with software-defined access controls.

9. Appgate SDP

4.3/5

Enterprise

Zero-trust network access with software-defined perimeter and context-based micro-segmentation.

10. Grip Security SSPM

4.3/5

Enterprise

SaaS security control plane discovering shadow SaaS and automating identity governance.

Frequently Asked Questions

What is the best free alternative to Perimeter 81?

Cloudflare Zero Trust is the strongest free or open-source alternative to Perimeter 81 in the SASE & Zero Trust category, with a community rating of 4.6/5.

Is Cloudflare Zero Trust better than Perimeter 81?

Cloudflare Zero Trust carries a community rating of 4.6/5 vs 4.2/5 for Perimeter 81. "Better" depends on your specific use case — pricing, deployment model, integrations, and support requirements all factor in. Compare both tools in detail before deciding.

How many Perimeter 81 alternatives exist?

There are 11 other tools in the SASE & Zero Trust category in our directory. We feature the top 10 above, ranked by editorial rating. Browse all alternatives →