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Claroty is positioned for cyber-physical systems, asset visibility and enterprise buyers open to custom quotes. The alternatives covered here serve adjacent needs, including vulnerability scanning, firewalls and zero trust; our published material does not describe them as like-for-like CPS visibility replacements. Reddit users report concerns about the separate architectures and sensors for Claroty CTD and xDome, and one commenter says CTD is less competitive than xDome. Before switching, pin down whether your priority is asset visibility, on-premises deployment or another security control.
01Why people leave Claroty
CTD and xDome use different architectures
A Reddit commenter says Claroty’s on-prem CTD and cloud xDome require different sensors, which can complicate a move between deployment models.
On-premises fit may disappoint
One commenter who uses both products says CTD is not competitive with xDome. Treat that as user feedback, not a universal verdict.
You need a different security focus
If the buying requirement has shifted from CPS visibility to vulnerability scans, firewalls or zero-trust access, compare tools built around that need.
02The alternatives, ranked by fit
- Vulnerability scanning
NessusNessusNessus is the closest fit here if your reason for leaving is a need to scan varied network assets for vulnerabilities, rather than maintain CPS visibility. Its listing includes unlimited vulnerability scans and web app scans. The listed starting price is $399.17, while the entry license is described as $4,790, so confirm the billing term and license scope before comparing costs.
Trade-off: It is a vulnerability scanner, not a documented CPS visibility replacement.
6.5/10from
$399.17/mo - Enterprise firewalls
Check Point Quantum Security GatewaysCheck Point Quantum Security GatewaysCheck Point Quantum Security Gateways may fit if you are replacing Claroty as part of a broader network-security change and need hardware firewalls across hybrid on-premises and cloud environments. The listing describes quote-based security subscriptions, but does not publish pricing or detailed limits. Ask for the exact subscription scope and deployment fit before treating it as a candidate.
Trade-off: Pricing and public product detail are limited; CPS visibility is not established here.
6.5/10from
Custom - Firewall and VPN
pfSense PluspfSense PlusConsider pfSense Plus if your switch is really about network functions rather than OT asset identification. Its listing points to Netgate appliances, AWS or Azure firewall deployments, VPN and VPC connectivity. The listed starting price is $10.75 and includes a free plan; check the full bill and upgrade terms before comparing it with a custom Claroty quote.
Trade-off: It is not presented as a CPS asset visibility platform.
6.7/10from
$10.75/mofree plan - Commercial firewall
OPNsense Business EditionOPNsense Business EditionOPNsense Business Edition is worth comparing if you want commercial firmware and business features instead of Claroty’s CPS-focused offering. Its listing calls out a commercial firmware repository, OPNcentral for multi-installation operators and included security features. The listed starting price is $11.08; weigh the upfront cost against the features you actually need.
Trade-off: The listing does not establish OT asset visibility or Claroty-like monitoring.
7.3/10from
€11.08/mo - Cloud security
Zscaler Cloud IPSZscaler Cloud IPSZscaler Cloud IPS is a candidate if you are already considering Zscaler and want a broader security platform, rather than a direct substitute for Claroty’s CPS visibility. Its price is not published on the vendor's site, and the listing advises getting the Cloud IPS scope in writing. Request a quote that spells out what is included before comparing vendors.
Trade-off: Custom pricing and scope need confirmation; CPS visibility is not specified.
5.5/10from
Custom - Zero-trust access
Zscaler Zero Trust ExchangeZscaler Zero Trust ExchangeZscaler Zero Trust Exchange may suit teams consolidating zero-trust controls, securing private app access or protecting AI deployments. Those are different buying goals from Claroty’s stated focus on cyber-physical systems and asset visibility. The listing says access limits matter and pricing is not published, so verify both against your requirements before you switch.
Trade-off: Access limits and pricing are not published on the vendor's site.
6.3/10from
Custom
03Side by side
| Tool | Score | From | Free plan | Best for |
|---|---|---|---|---|
 Claroty Claroty (current) | 6.0 | Custom | No | Organizations protecting cyber-physical systems |
| Nessus Nessus | 6.5 | $399.17/mo | No | Teams needing unlimited vulnerability scans |
| Check Point Quantum Security Gateways Check Point Quantum Security Gateways | 6.5 | Custom | No | Enterprises seeking hardware firewalls |
| pfSense Plus pfSense Plus | 6.7 | $10.75/mo | Yes | Netgate appliance buyers |
| OPNsense Business Edition OPNsense Business Edition | 7.3 | €11.08/mo | No | Teams wanting a commercial firmware repository |
| Zscaler Cloud IPS Zscaler Cloud IPS | 5.5 | Custom | No | Organizations already considering Zscaler |
| Zscaler Zero Trust Exchange Zscaler Zero Trust Exchange | 6.3 | Custom | No | Organizations consolidating zero trust controls |
Questions people ask
Which Claroty alternative is best for CPS visibility?
None of the alternatives covered here is described in the published material as a like-for-like CPS visibility product. Nessus is listed for vulnerability scanning; the others focus on firewalls, cloud security or zero trust. If asset visibility is the requirement, ask vendors to demonstrate the relevant coverage and architecture before choosing.
Why do some Claroty users consider switching?
One Reddit thread raises the difference between Claroty’s on-premises CTD and cloud xDome architectures, including different sensors. A commenter also says CTD is less competitive than xDome. These are user opinions, not proof that every deployment will have the same issue, so verify your own migration requirements.
How much does Claroty cost compared with these alternatives?
Claroty’s starting price is not published on the vendor's site. Among these alternatives, Nessus is listed from $399.17, pfSense Plus from $10.75 and OPNsense Business Edition from $11.08. Check billing terms and scope: Check Point and Zscaler pricing is not published here, and some options require quotes.