Zscaler Alternatives (2025): 9 Serious Options & When They Win

Zscaler owns the roaming-user + SaaS access story. But not every program wants “all-in SSE,” or your edges just don’t look like the demo. This guide lays out the nine most credible Zscaler competitors, where they shine, and the traps you’ll want to catch before the PoC.

In This Guide, You’ll Get

• Nine Zscaler alternatives, judged on practical outcomes (performance, DLP depth, SD-WAN/SASE fit, investigation UX).
• Quick-glance tables you can paste into an email or Slack thread.
• A PoC/migration checklist that doesn’t blow up your week.

The Top 9 Zscaler Competitors in 2025

1. Palo Alto Networks (Prisma Access / Prisma SASE)
2. Netskope (Netskope One + NewEdge)
3. Cisco (Secure Access + Umbrella)
4. Cloudflare (Cloudflare One / Zero Trust)
5. Fortinet (FortiSASE)
6. Check Point (Harmony SASE + Enterprise Browser)
7. Versa Networks (Versa SASE / SSE)
8. Skyhigh Security (Skyhigh SSE)
9. Cato Networks (Cato SASE Cloud)

Gartner’s 2025 SSE MQ again cites Zscaler, Netskope, Fortinet, and Palo Alto at the top; Cloudflare shows up in related SASE research; Skyhigh appears as a Niche Player; and Cato/Versa are recognized on the SASE side.

Zscaler Competitors 2025: Quick-Glance Matchups

Want to Switch Providers Without Losing Visibility?

Most SSE shifts stumble on basics: identity claims don’t match device posture, data controls use demo settings, and latency jumps from the wrong egress. At UnderDefense, we run the stack you choose and make the proof measurable.

Here’s what we can do for you:

• Agree on what stays, what changes, and who owns it
• Set success metrics you can verify in production
• Align IdP groups and device posture so policies hold under load
• Wire DLP and API CASB to your real data and workflows
• Measure latency from your user regions and tune routing for speed
• Normalize logs into one incident timeline in your SIEM or XDR
• Provide 24/7 MDR to prioritize, hunt, and guide containment and remediation
• Roll out in phases with safe rollback and clear change control
• Deliver executive-ready reporting on MTTD, MTTR, and coverage

Let us show you how we can keep your company safe 24/7.

With that in place, here’s who to evaluate next.

1. Palo Alto Networks: Prisma Access/Prisma SASE

Cloud-delivered SSE/SASE that snaps into Palo Alto’s SecOps brain (Cortex XSIAM/XDR/XSOAR) and NGFW estate for one investigation/automation loop.

Where it’s better than Zscaler (common wins):

• SecOps coherence: native log/alert streaming from Prisma Access and NGFW/Panorama into Cortex XSIAM → faster evidence→case→action without stitching tools.
• Single operating model across SASE: continuous feature work tying Prisma SASE to Cortex and Prisma SD-WAN (designing for one platform rather than bolt-ons).

Where it can trail Zscaler (you should test):

• Pure SSE scale/peering & “VPN-off” ergonomics: Zscaler/Netskope may feel snappier in some geos; measure real user latency/handshakes.

What to run in your PoC:

• In XSIAM, open a case sourced from Prisma Access, drive an automated action (e.g., session kill/endpoint isolate), and export an audit-ready narrative.
• Compare page-load/TLS-handshake from your top geos vs current egress (don’t rely on PoP maps).

Choose Prisma if… your SOC already lives in Cortex and you want SecOps + access controls under one brain, more than you want the absolute widest SSE peering map.

• Palo Alto Networks pricing is ~$14–$22/user/month (field benchmark for Prisma Access/SASE); enterprise totals rise with users, inspected traffic (TLS-on), ADEM/DLP add-ons, and Cortex XSIAM ingestion if you centralize investigations.
• Zscaler pricing is around $8–$15/user/month (field benchmark); totals climb with advanced modules (DLP, CASB, Browser Isolation), private connector footprint, inspected traffic (TLS-on), and support tier—2K users often land ~$250K–$400K/year.

2. Netskope: Netskope One (on NewEdge)

Netskope is a data-centric SSE platform (SWG/ZTNA/CASB/DLP/DEM) delivered over NewEdge, a large private SASE cloud backbone.

Where it’s better than Zscaler (common wins):

• Data protection depth: longstanding DLP/CASB leadership; repeatedly a Leader in Gartner’s SSE MQ (2025), cited at the front of “completeness of vision.”
• Backbone story: Carrier-grade NewEdge keeps security in line and close to users; vendor publishes RTT/Speed-test data and keeps shipping infra updates.

Where it can trail (you should test):

• Ops narrative across tools: If your incident story lives in a specific SIEM/XDR, validate end-to-end triage speed and actioning (not just detection UI). (General PoC caution.)

What to run in your PoC:

• Use real EDM/IDM patterns and API CASB for your top SaaS; score true positive vs policy noise.
• Measure user-perceived latency from your geos into NewEdge (Catchpoint/last-mile).

Choose Netskope if… the board’s #1 concern is data (who touched it, what left, where it sits), and you want SSE where DLP/CASB are the center of gravity, backed by a private edge.

Netskope pricing starts at ~$12–$18/user/month (field benchmark for Netskope One); costs scale with DLP/CASB scope (EDM/IDM libraries), isolation seats, DEM, and NewEdge egress usage for heavy SaaS.

3. Cisco: Secure Access (SSE)

Cisco’s cloud SSE with unified client and Hybrid ZTNA/VPNaaS to cover apps ZTNA can’t, aligned with Duo and ISE for identity/NAC, aimed at “anything to anywhere.”

Where it’s better than Zscaler (common wins):

• Cisco-first estates: cleaner end-to-end flows when you already run Duo (MFA/posture) and ISE (segmentation/NAC). Unified-client push and single, cloud-managed console keep friction low.
• Coverage for “non-ZTNA-friendly” apps: VPNaaS option provides cloud-delivered access for the awkward private apps/protocols that ZTNA alone doesn’t fit, useful in mixed estates.

Where it can trail (you should test):

• Cloud-born SSE feature velocity/polish vs the pure-plays. Validate the exact ZTNA/SWG/CASB knobs your workflows need. (General PoC caution.)

What to run in your PoC:

• Exercise Hybrid ZTNA: ZTNA for most apps + VPNaaS for exceptions, on the same client, with Duo policies and ISE posture in the loop. Measure switch-over UX and policy consistency.
• Verify SLA/availability claims and client stability from your user’s go (Cisco Live sessions document the architecture targets).

Choose Cisco if… you’re a Cisco shop and want least-friction SSE that honors your Duo/ISE patterns and still handles the long tail of private apps via VPNaaS on one client.

Cisco pricing lands around ~$10–$16/user/month (RFP rumor for Secure Access SSE); EA bundles can discount materially. Price drivers: Duo tiers (MFA/Device Trust), ISE posture hooks, and Umbrella SWG features enabled.

4. Cloudflare: Cloudflare One/Zero Trust

Internet-native SSE/SASE pieces (ZTNA, SWG, CASB, isolation, DEM) delivered on Cloudflare’s global anycast network; simple “VPN-off” rollouts with a unified control plane.

Where it’s better than Zscaler (you’ll feel it):

• User-perceived speed + rollout simplicity. Access (ZTNA) and Gateway (SWG) ride Cloudflare’s edge; policy->seat mapping is straightforward. Teams often see snappier logins/app loads because traffic stays on the Cloudflare backbone.
• Consolidated controls. ZTNA, SWG, CASB, and (optional) remote browser isolation are exposed in one Zero Trust surface; fewer moving parts for standard “kill-VPN” programs.

Where it can trail (test this):

• Legacy/branch needs. You may still need branch-level controls (Cloudflare Magic Firewall FWaaS or existing site firewalls) for legacy protocols/special inspection at the edge; validate CASB/DLP depth against your exact policies.

What to prove in a PoC:

• Speed: Measure TLS handshakes and page loads from 3–5 real user geos vs your current egress.
• Coverage: Map ZTNA for 80–90% of apps and confirm any “awkward” protocols have a workable path.
• Data controls: Exercise inline CASB/DLP on your high-risk SaaS flows.

Choose Cloudflare if… the mandate is “turn off VPN, keep users fast,” and you want a globally consistent Zero Trust plane with minimal plumbing. Cloudflare pricing is~$7–$12/user/month (field benchmark for Cloudflare One/Zero Trust); bumps come from remote browser isolation, CASB/DLP coverage, and if you add WAN/eXit features for outbound egress control.

5. Fortinet: FortiSASE

Fortinet’s cloud SSE/SASE extends the Fortinet fabric. One agent (FortiClient) for EPP, ZTNA, SSE, CASB, DEM, etc.; unified management (FortiManager/Analyzer) and PoPs that tie cleanly to FortiGate SD-WAN.

Where it’s better than Zscaler (for Fortinet shops):

• One fabric, one agent. FortiClient, as a single unified endpoint agent for ZTNA/SSE/EPP/DEM, reduces client sprawl and keeps posture logic consistent.
• Branch/WAN coherence. FortiSASE PoPs integrate with existing FortiGate SD-WAN; ZTNA tags can flow to FortiGate app gateways for role-based access, useful when users and sites must share policy DNA.

Where it can trail (be honest in testing):

• Cloud-born SSE “polish.” Identity-first policy ergonomics and roaming-user UX can feel behind pure-plays; validate real user experience and geolocation of FortiSASE PoPs for your top regions.

What to prove in a PoC:

• Unified-agent reality: ZTNA posture + SWG + EPP on the same host without conflicts; verify DEM visibility and correlation in your tenant.
• Policy continuity: Push a user tag → enforce on ZTNA app (FortiSASE) and at a FortiGate gateway; check auditability.
• Scale details: Confirm private-app access model and any object/limit constraints.

Choose Fortinet if… you’re already Forti-heavy (NGFW/SD-WAN/APs) and value one fabric/agent/manager more than the very latest SSE feature finesse.

Fortinet pricing is ~$8–$14/user/month (RFP rumor for FortiSASE); expect extras for CASB/DLP packs, DEM, and any FortiGate/SD-WAN licenses you keep for branches (PoP proximity and TLS-on throughput also matter).

6. Check Point: Harmony SASE (+ Enterprise Browser)

Harmony SASE for SSE controls, now extended with Enterprise Browser to enforce Zero Trust on unmanaged/BYOD/third-party devices without a persistent agent.

Where it’s better than Zscaler (specific use case):

• Unmanaged device access, cleanly. Enterprise Browser delivers granular policy, monitoring, and data safeguards at the browser layer, so contractors/partners can work without shipping laptops or installing heavy agents. Available globally since Sep 3, 2025.

Where it can trail (plan time for design):

• Turnkey SSE ergonomics. Getting to the same “pure-play” SSE feel may require more upfront policy and rollout design, especially mixing managed and unmanaged flows.

What to prove in a PoC:

• BYOD/3rd-party journey: Stand up Enterprise Browser, federate with your IdP, and enforce DLP-style rules on SaaS and private apps; test session monitoring/termination.
• Mixing modes: Validate how managed endpoints (agent) and unmanaged (browser) share policy and audit trails in Harmony.

Choose Check Point if… unmanaged/BYOD and third-party access is your sticking point, and a browser-level control plane is the most operationally sane answer. 

Check Point pricing is ~$11–$17/user/month (field benchmark for Harmony SASE); Enterprise Browser seats and advanced DLP/sandboxing raise totals—mix of managed agent vs. browser mode affects volume pricing.

7. Versa Networks: Versa SASE/SSE

A single-vendor SASE platform (SD-WAN + SSE in one OS/console) that’s one of the few vendors recognized across SASE, SSE, and SD-WAN, useful when users and branches must live under one policy fabric.

Where it’s better than Zscaler (common wins):

• One fabric for users + sites. If your WAN is in scope, Versa gives you SD-WAN and SSE under the same design/telemetry, not stitched products. That’s the appeal when day-2 ops and drift control matter as much as “kill VPN.”
• Analyst validation across the stack. Versa is repeatedly cited in the Gartner MQs for SASE, SSE, and SD-WAN. Handy for large org governance and procurement.

Where it can trail (test this):

• If you only need SSE for roaming users, Versa can feel like “more platform than necessary.” Check whether you’re paying for SD-WAN depth you won’t use.

What to prove in a PoC:

• Policy continuity: push one access policy that applies to ZTNA/SWG for users and SD-WAN for branches; verify monitoring and incident evidence land in one place.
• Day-2 ops: template rollout, change control, and rollback across both users and sites, no parallel toolchains.

Choose Versa if… the real problem is SASE, not just SSE, you want one vendor and one operating model for users and branches.

Versa Networks pricing is ~$9–$14/user/month + branches ~$1.2K–$2.5K/site/year (RFP rumor for Versa SASE/SSE); consolidation helps, but SD-WAN feature tier, throughput class, and template count drive variance.

8. Skyhigh Security: Skyhigh SSE

A data-centric SSE (SWG, CASB, ZTNA, DLP, optional isolation) that doubled down on data risk in 2025 by integrating DSPM, visibility, and controls for sensitive data in SaaS/IaaS.

Where it’s better than Zscaler (common wins):

• Data governance depth. Longstanding DLP/CASB plus DSPM helps answer board questions (“where’s our sensitive data, who touched it, what leaked?”) with a single data policy across web, cloud, email, and private apps.
• Third-party validation on DSPM. Omdia’s 2025 Universe report highlights Skyhigh’s DSPM strengths; useful air cover for risk/compliance stakeholders.

Where it can trail (test this):

• Ecosystem gravity and automation. Ensure integrations cover your SIEM/XDR/ITSM stack and check which DSPM findings can be auto-remediated vs. only alerted. (Omdia notes limits typical of SSE-driven DSPM.)

What to prove in a PoC:

• Your data, not demo data: run EDM/IDM classifiers and API CASB on your top SaaS; confirm alert quality and DLP false-positive rate.
• DSPM to action: trace a sensitive-data finding from discovery → owner → fix; note where you need CIEM/PAM hooks to close the loop.

Choose Skyhigh if… data risk is the #1 driver and you want one SSE surface that speaks DLP/DSPM natively across web, cloud, email, and private apps.

Skyhigh Security pricing is ~$10–$17/user/month (field benchmark for Skyhigh SSE); adding DSPM and email/web integrations increases cost—API CASB coverage across big SaaS suites is the main multiplier.

9. Cato Networks: Cato SASE Cloud

A single-vendor SASE built on an SLA-backed global private backbone (not just public Internet hops) that unifies SD-WAN and security; a 2025 Gartner SASE MQ Leader.

Where it’s better than Zscaler (common wins):

• Backbone + platform simplicity. Users and branches ride the same privately managed backbone with one policy/control plane. Attractive when you want predictable latency and fewer moving parts.
• Pace on emerging risks. In 2025, Cato bought Aim Security (AI-SPM, AI Firewall) to fold AI app/agent protections into the SASE fabric, signaling roadmap ambition. External coverage and the company release align.

Where it can trail (test this):

• You’re buying a SASE worldview. If your org wants to keep a separate WAN stack (or isn’t ready to consolidate), scope carefully to avoid overlap.

What to prove in a PoC:

• End-to-end performance: measure voice/video/SaaS flows across roaming + branches versus current WAN/e-gress; validate the backbone SLA/uptime in your regions.
• Unified operations: one policy and one incident trail across SD-WAN + SSE; check multi-site rollout and change safety (templates/rollbacks).
• AI controls (forward-looking): confirm planned timelines and scope for Aim Security features if AI governance is a 2026 requirement.

Choose Cato if… You want true single-vendor SASE with a managed backbone and a tight, unified operating model. Users and sites are handled the same way globally.

Cato Networks pricing is ~$8–$14/user/month + sites ~$1.5K–$3K/site/year (RFP rumor for Cato SASE Cloud); managed private backbone, QoS for voice/video, and advanced threat/IPS tiers influence the curve.

Making ZT/SSE/SASE Optimization Smoother

Shifting vendors is only half the job. The real work is getting identity, data, and evidence to move in lockstep so alerts turn into decisions.

1. Start with clarity, not tools. Audit what stays, what’s replaced, and where overlaps live: especially agents, tunnels, and log sources. Kill duplicates before they become tickets.
2. Tie identity to everything. Map how IdP claims and device posture flow through ZTNA, SWG, CASB, and (if SASE) SD-WAN. Most access pain is mismatched claims, not missing features.
3. Normalize telemetry at the pipe. Vendors log the same event ten different ways. We standardize timestamps, users, devices, and app names before they hit SIEM/XDR, so every alert renders as the same story.
4. Cut over with guardrails. Roll out in phases, keep failback paths hot, and test in production on purpose. Measure TLS handshakes, page loads, and voice/video health from real users.
5. Build checks, not just dashboards. We add drift detectors for policy/object hygiene, alert-gap alarms for broken feeds, and log-loss monitors on every connector.
6. Reduce agent sprawl. Consolidate where it’s sane (unified ZTNA/SWG/DEM) and disable overlapping features across EDR/MDM/VPN. For partners/BYOD, favor the enterprise browser or clientless paths.
7. Make DLP real. Swap generic regexes for your EDM/IDM patterns. Turn on API CASB for the top SaaS so the quiet exfil paths are covered. Apply isolation narrowly to high-risk destinations.
8. One incident story. Decide the source of truth (SIEM/XDR or the vendor case system). Wire one-click actions (session kill, user isolate, policy rollback) so analysts move from alert to outcome in minutes.
9. Tune for user experience. Pick PoPs/backbone exits by measured latency, not maps. Maintain a living split-tunnel/bypass list. In SASE, set path-health thresholds and verify MOS after real meetings.
10. Keep costs predictable. Track the “expensive buttons” (TLS/DLP at scale, isolation seats, DSPM scans, egress/backbone). Decommission legacy VPN/SWG within two change windows.

How UnderDefense Helps (Without Ripping and Replacing)

We run your security like a 360° system, not a stack of parts. 

First, we clear the fog. 

1. Optimize the tools you already own so telemetry lines up and every alert carries context and a timeline. That gives you real visibility end-to-end: user to app, branch to cloud, identity to data. 
2. While our engineers tune policies and performance, our hunters live in the stream, linking weak signals into stories and pushing fixes back into the controls that matter. 
3. Red team pressure-tests the whole loop (probing auth, edge, SaaS, and data paths) so detections get sharper, response gets faster, and blind spots turn into coverage. 
4. When workloads spike or projects move, we drop in the people you’re missing: analysts, engineers, and incident leads, augmenting your team without taking the keys. 

You keep ownership of tools and data; we make them act as one organism: full-circle defense, clear visibility, fewer false positives, quicker answers, and a program that’s lighter to run.

What you get

• 360° visibility: Unified signals across cloud, SaaS, endpoint, network, and identity: one timeline per incident.
• Tool optimization: Telemetry normalization, policy hygiene, split-tunnel/PoP tuning, and cost control on “expensive buttons.”
• Detection engineering & hunting: Hypothesis-driven hunts, gap analysis, new detections shipped: measured by MTTD/MTTR, not dashboards.
• Adversary emulation (red team): Auth, ZTNA/SWG, data paths, and control bypasses tested; fixes fed back into detections.
• Response you can trust: One-click session kill, user isolate, policy rollback, and audit-ready narratives.
• Team augmentation: Hunters, IR leads, and platform engineers plugged in where you’re thin. Your runbooks, your tools.