The Zscaler ZIA Alternative That Runs on the Endpoint, Not in the Cloud

Zscaler Internet Access, ZIA, is a cloud proxy. Every web request from every user is routed to a Zscaler point of presence, inspected there, then sent on to the internet. That model made sense when the alternative was a stack of appliances in a data center. It makes a lot less sense when your users are remote, your apps are SaaS, and the nearest PoP still adds a round trip to everything they do.

Short answer: The strongest Zscaler ZIA alternative is dope.security, an agent-based secure web gateway that performs URL filtering, TLS inspection, DLP, and AI governance on the device itself. Traffic flies direct to its destination instead of detouring through a Zscaler PoP, which removes the latency, the GRE and IPsec tunnels, and the Client Connector overhead.

What ZIA actually is, and what it costs you

ZIA is the web and internet half of Zscaler's platform. ZPA, Private Access, is the other half for private apps. If you are shopping for a ZIA alternative, you are looking to replace the secure web gateway function: outbound web filtering, SSL inspection, and threat and data controls. We mapped out how the two halves differ in Zscaler ZIA versus ZPA.

The cost of ZIA is not only the license. It is the architecture. Traffic is steered to a PoP through the Zscaler Client Connector or tunnels, inspected, then released. Users in regions far from a PoP feel it. Teams managing forwarding profiles, bypass lists, and SSL exemptions feel it too. The model concentrates inspection in Zscaler's cloud, which means your performance depends on their nearest node.

The endpoint model: inspect where the traffic is

dope.security flips the location of inspection. Instead of sending traffic to a proxy, it runs the proxy logic on the device through the dope.endpoint agent. URL filtering and TLS inspection happen locally, then the request flies direct to its destination. There is no PoP round trip and no tunnel to maintain. We explain the mechanics in on-device TLS inspection, and we compare the broader replacement options in the on-device SWG replacement for Zscaler.

The footprint is small: under 100 MB of RAM, roughly 4x the performance of legacy proxy gateways. Policy pushes from a single console in seconds rather than waiting on polling intervals.

dope.security vs Zscaler ZIA

What about ZPA?

If you also use ZPA for private application access, that is a separate function from the web gateway. Replacing ZIA does not force you to rip out private access on day one. dope.security is focused on the secure web gateway, DLP, CASB, and AI governance layers, with VPN on the roadmap. Many teams replace the ZIA web function first because it touches every user and every request, where the latency tax is most visible. For the full side-by-side, see Zscaler versus dope.security.

Performance is the whole point

The reason teams move off ZIA is rarely a missing feature. It is the daily experience: a sluggish SaaS app, a slow video call, an upload that crawls because it took the scenic route through a PoP. On-device inspection removes that detour. A Fortune 100 company deployed dope.security across more than 18,000 devices in record time, described in the Fortune 100 deployment story, which shows the agent model scales without a PoP build-out.

Inspection depth and data protection

An endpoint SWG is not a lighter SWG. dope.security does full URL filtering, on-device SSL inspection, anti-malware, and app-aware controls. Dopamine DLP catches sensitive uploads and AI prompts in motion with a zero-retention API, protected under US Patent 12,464,023. CASB Neural handles data at rest in OneDrive and Google Drive. For the broader market view, our best Zscaler alternative guide ranks the field.

What is the best Zscaler ZIA alternative?

What replaces Zscaler ZIA? An agent-based secure web gateway like dope.security replaces ZIA's web filtering, TLS inspection, and threat controls, but runs them on the device rather than in a cloud PoP. That removes tunnels and PoP latency.

Do I have to replace ZPA at the same time? No. ZIA is the web gateway and is the usual first move. Private access can be handled separately and on your own timeline.

Is an on-device gateway faster than ZIA? For most users, yes, because traffic flies direct instead of routing to the nearest Zscaler PoP and back.

If ZIA is taxing every request with a round trip, move inspection to where the traffic already is. See how Fly Direct secure web gateway works and book a 20-minute demo.