About Zscaler
Zscaler is a commercial cloud security provider built around its Zero Trust Exchange. Instead of routing users through a corporate network, it places a cloud service between users, devices and workloads and the applications they reach, so access decisions are made per connection. It targets enterprises moving away from VPNs and perimeter firewalls.
The platform includes Secure Internet Access for web and SaaS traffic, Secure Private Access for internal apps without a VPN, Zero Trust Branch, Zero Trust Cloud, Digital Experience monitoring, a zero trust browser, cloud sandbox, a zero trust firewall and privileged remote access. The vendor also promotes data security, security for AI and agentic security operations.
Zscaler is proprietary and delivered entirely as a cloud service through regional cloud portals, so there is nothing to host yourself. Customers typically request a demo, and the vendor publishes a pricing and plans page that outlines how the offering is packaged.
Key features
- Secure internet access for web and SaaS traffic
- Private application access without a VPN
- Cloud sandbox for unknown file threats
- Zero trust firewall across ports and protocols
- Digital experience monitoring for apps and devices
- Privileged remote access for administrators
Good fit for
- →Replacing a VPN with zero trust access
- →Securing branch offices and remote workers
- Tags
- security
- zero-trust
- sase
- secure-web-gateway
- ztna
- cloud-security
- enterprise
Zscaler: questions and answers
- What is Zscaler used for?
- Zscaler is a cloud security platform that applies zero trust to internet and private application access, for enterprises replacing VPNs and traditional network security. It is a good fit for replacing a VPN with zero trust access, and securing branch offices and remote workers.
- How much does Zscaler cost?
- Zscaler doesn't publish fixed prices; pricing is quoted on request.
- Is Zscaler open source?
- No. Zscaler is proprietary (closed-source) software and can't be self-hosted. Open-source alternatives to Zscaler include Pomerium, OpenZiti and Octelium.
- What are some alternatives to Zscaler?
- Zscaler competes with Netskope, Cloudflare Zero Trust and Palo Alto Networks. For open-source options, see Enlisted's ranked list of open-source Zscaler alternatives.
Open-source alternatives to Zscaler
See all
Pomerium
Security
Pomerium is an identity and context-aware access proxy.
Apache-2.0vs Cloudflare Zero Trust★ 5k
OpenZiti
Networking & VPN
The parent project for OpenZiti. Here you will find the executables for a fully zero-trust
Apache-2.0vs Twingate★ 4.4k
Octelium
Networking & VPN
A next-gen FOSS self-hosted unified zero trust secure access platform that can operate as
AGPL-3.0vs Tailscale★ 4.1k
Firezone
Networking & VPN
Blazing-fast remote access
Apache-2.0vs Tailscale★ 9.1k
Infisical
Security
Infisical is the open-source platform for secrets, certificates, and privileged access man
OSSvs Doppler★ 30k
SafeLine
Security
CyberServal open-source WAF is a self-hosted WAF with 20.9K GitHub stars. Block SQL inject
GPL-3.0vs Cloudflare★ 23k
SaaS alternatives to Zscaler
See all
Netskope
Security
Security service edge platform covering CASB, secure web gateway and data protection
SaaS
Cloudflare Zero Trust
Security
Zero trust network access, secure web gateway and browser isolation from Cloudflare
SaaS
Palo Alto Networks
Security
Network, cloud and endpoint security vendor selling firewalls, SASE and SOC tools
SaaS
Fortinet
Security
FortiGate firewalls and a broad security fabric for network, cloud and endpoints
SaaS
Prisma Access
Security
Palo Alto Networks cloud-delivered secure access service edge
SaaS
Cato Networks
Security
Cloud-native SASE platform combining SD-WAN and network security
SaaS

