In Forrester's evaluation of the emerging market for Zero Trust network access, we identified the 15 most significant providers in the category — Akamai Technologies, Appgate, Cisco, Citrix, Cloudflare, Google, Juniper Networks, Netskope, Palo Alto Networks, Perimeter 81, Proofpoint, Tencent Security, VMware, Wandera, and Zscaler — and evaluated them. This report details our findings about how well each vendor scored against 10 criteria and where they stand in relation to each other. Security professionals can use this report to select the right partner for their Zero Trust network access.