Best Zscaler Alternatives for Secure Web Gateway in 2026

Secure Web Gateway (SWG) is the foundational SASE capability — inspecting all web traffic, enforcing acceptable use policies, blocking malware and phishing, and performing TLS/SSL decryption at scale. Zscaler Internet Access (ZIA) pioneered cloud-delivered SWG, but several altern

Best picks for this use case

#1

Netskope

Netskope's SWG combines full inline web inspection with its industry-leading Cloud XD engine, providing the deepest context-aware policy enforcement for web and SaaS traffic. Its NewEdge network delivers full-compute inspection in 70+ regions, and the integrated CASB adds granular SaaS activity controls that go beyond traditional SWG allow/block decisions.

Cloud-native SASE platform with industry-leading CASB and granular SaaS visibility

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#2

Cloudflare Zero Trust

Cloudflare Gateway delivers SWG capabilities on the world's largest Anycast network (300+ cities), providing the lowest latency for most users globally. DNS-layer filtering, HTTP inspection, and browser isolation are included with transparent pricing starting at $7/user/month — making enterprise SWG accessible to organizations of all sizes.

Developer-friendly zero trust platform built on Cloudflare's global Anycast network

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#3

Palo Alto Prisma Access

Prisma Access delivers cloud-delivered NGFW-grade web inspection with the same threat prevention, URL filtering, and WildFire sandboxing that enterprises trust from on-prem FortiGate firewalls. Best for existing Palo Alto customers who want consistent security policies across on-prem and cloud SWG.

Enterprise SASE platform extending Palo Alto's next-gen firewall to cloud-delivered security

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#4

Fortinet FortiSASE

FortiSASE's SWG leverages FortiOS and FortiGuard Labs threat intelligence at the most competitive pricing in the enterprise SASE market. Its integrated SD-WAN ensures web traffic is optimally routed before inspection, and FortiGuard's massive threat database provides robust malware and phishing protection.

Converged SASE platform powered by FortiOS with competitive pricing and integrated SD-WAN

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#5

Cato Networks

Cato's SWG operates within its single-pass cloud engine on a private global backbone, ensuring predictable inspection performance without the latency variability of internet-based platforms. The unified management console makes SWG policy management the simplest of any alternative.

Single-vendor cloud-native SASE platform with private global backbone and converged architecture

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How to implement this

  1. 1

    Assess Current Web Security Posture

    Audit your current web security architecture including existing proxy infrastructure, firewall URL filtering rules, DNS filtering policies, and TLS/SSL inspection coverage. Identify gaps such as uninspected encrypted traffic, unprotected remote users, or blind spots in SaaS application usage that a cloud SWG will address.

  2. 2

    Define Web Security Policies

    Establish URL categorization and acceptable use policies, TLS/SSL inspection scope (including bypass lists for sensitive categories like healthcare and banking), malware scanning requirements, and browser isolation triggers. Define policies for file download inspection, sandboxing thresholds, and data upload restrictions.

  3. 3

    Deploy Cloud SWG Agents and PAC Files

    Roll out endpoint agents (Zscaler Client Connector, Netskope Client, Cloudflare WARP, etc.) to corporate devices for always-on web inspection. Configure PAC files or proxy settings for unmanaged devices. Establish IP anchoring or GRE/IPsec tunnels for branch office traffic forwarding to the cloud SWG.

  4. 4

    Enable TLS/SSL Inspection

    Deploy the SWG platform's root CA certificate to all managed endpoints and configure TLS inspection policies. Enable inspection for all web traffic while configuring bypass lists for applications that break with TLS interception (such as certificate-pinned apps, medical devices, or financial platforms). Monitor inspection coverage and error rates.

  5. 5

    Monitor, Tune, and Optimize

    Review web traffic analytics, blocked threat reports, and policy violation dashboards. Tune URL categorization overrides for misclassified sites, adjust TLS bypass lists based on user feedback, and optimize bandwidth management policies. Establish regular review cadences for threat trends and policy effectiveness.

Frequently Asked Questions

Cloud SWG eliminates the need for on-premises proxy appliances by inspecting all web traffic in the cloud. This provides consistent security for users everywhere — office, home, or mobile — without backhauling traffic to a data center. Cloud SWG also scales elastically to handle encrypted traffic inspection without capacity limits, receives real-time threat intelligence updates, and reduces operational burden by eliminating appliance patching and hardware lifecycle management.

Netskope and Zscaler both perform full inline TLS inspection at cloud scale with minimal latency impact. Cloudflare's Anycast architecture provides the fastest raw network performance due to proximity, though its inspection depth is still maturing. Palo Alto Prisma Access delivers NGFW-grade inspection quality. For the best balance of inspection depth and performance, Netskope's NewEdge network with full compute at every PoP is the strongest alternative to Zscaler's inspection capabilities.

Yes. Cloud SWG provides the same URL categorization, content filtering, and threat blocking as on-premises firewall URL filtering — plus encrypted traffic inspection, advanced threat sandboxing, and remote user coverage that on-prem firewalls cannot provide. Most organizations deploy cloud SWG alongside existing firewalls initially, then gradually reduce on-prem filtering as cloud coverage expands. The cloud SWG becomes the primary web security enforcement point while firewalls handle remaining east-west and perimeter controls.

Choose a platform with PoPs close to your users — Cloudflare (300+ cities) and Zscaler (150+ DCs) have the broadest coverage. Implement split tunneling to route only relevant traffic through the SWG. Monitor digital experience metrics using tools like Zscaler ZDX, Palo Alto ADEM, or ThousandEyes. Configure TLS bypass lists for latency-sensitive applications. Most cloud SWG platforms add less than 5-10ms latency when users connect to a nearby PoP.
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