Best Armis Alternatives: 2026 Guide

For many security teams, the next Armis renewal is the first since ServiceNow completed its acquisition of Armis in April 2026. That makes it a practical moment to confirm that your connected device security platform, partner, and future roadmap still matches what your program needs. For many, that’s an accurate inventory, a short list of the devices that actually put you at risk, and a reliable path from that list to reduced risk for your entire IoT, OT, IoMT, and IT attack surface.

This guide covers what to evaluate in an Armis alternative, compares the platforms security teams most often shortlist, and explains where Asimily fits for teams that need to close exposures without disrupting operations.

In this guide, you’ll find:

• What the ServiceNow acquisition means for Armis customers planning a renewal
• Why security teams evaluate Armis alternatives beyond acquisition uncertainty
• Seven key criteria for evaluating connected device security platforms, including pricing
• A side-by-side comparison of the top eight Armis alternatives for 2026
• Key operational metrics and third-party analyst positioning across leading vendors
• How Asimily moves teams from risk intelligence to enforced, continuously maintained policy
• What to test before signing with a new vendor
• Frequently asked questions regarding Armis migration and device security

Why Armis Customers Are Weighing Their Options

ServiceNow completed its acquisition of Armis on April 20, 2026, in a deal valued at about $7.75 billion. ServiceNow has further said the combination is designed to connect Armis asset intelligence to its risk prioritization, remediation, and reporting workflows.

For organizations already standardized on ServiceNow, that direction may be a strong fit. For others, a renewal is a reasonable time to ask a few practical questions:

• How will packaging and pricing change as Armis capabilities move into the ServiceNow portfolio?
• Does the platform’s value now depend on running ServiceNow for IT and security workflows?
• Where does connected device security, especially OT and medical device coverage, sit on the combined roadmap?
• Where will investment dollars flow within ServiceNow, towards or away from the Armis platform?

They are the same questions any team should ask when a core security vendor changes ownership, and they are easier to answer with a comparison already in hand.

Why Teams Evaluate Armis Alternatives

Beyond acquisition uncertainty, security teams actively evaluate alternatives to Armis for several practical product and operational reasons:

• High remediation volume: Generic vulnerability scoring generates lengthy lists of findings without clear prioritization based on actual network topology or exploitability.
• Enforcement limitations: Moving from passive visibility to active, enforced network microsegmentation often requires complex secondary integrations.
• Specialized device coverage: Specialized environments, such as healthcare (IoMT) or industrial control (OT), frequently require deeper protocol analysis and targeted mitigations beyond basic asset classification.

What to Evaluate in an Armis Alternative

When evaluating connected device security platforms, seven key criteria help security leaders distinguish capabilities during vendor selection.

Criterion	Why It Matters
Deployment Model	Many IoT, OT, and medical devices cannot run agents or tolerate aggressive scanning. Confirm the platform builds a complete inventory agentlessly, safely, and without disruption.
Exploitability Analysis	Generic CVSS scoring produces lengthy lists. Does the platform analyze actual network context to determine which vulnerabilities are genuinely exploitable on a specific device?
Path to Enforcement	A recommendation is not a control. Check whether the platform creates, simulates, applies, and maintains policy, and through which enforcement points: NAC, firewall, or natively.
Mitigation Beyond Segmentation	Some devices can be patched, some can only be reconfigured, and some can only be contained. Look for patching, configuration drift control, and targeted mitigations alongside segmentation.
Fit With Your Existing Stack	The platform should work with the NAC you already own, such as Cisco, Aruba, Arista, or Extreme, along with your firewalls, SIEM, and ITSM tools.
Vendor Strategy and Focus	Is connected device security the core focus of the vendor’s roadmap, or a secondary module within a broader IT suite?
Pricing Transparency and Model	How is licensing structured (e.g., per-device count vs. site licenses), and are quotes predictable as device counts grow?

Top Armis Alternatives for 2026

The table below compares approach, best fit, and notable strength across the platforms security teams evaluate most often, starting with Asimily.

Platform	Best For	Approach	Notable Strength
Asimily	Organizations across IoT, OT, IoMT, and IT that need to move from inventory to enforced policy to actually reduce risk now via multiple methods, including microsegmentation.	Agentless, cloud/on-prem, multiple means of enforcement	ATT&CK Analysis (based on MITRE) that determines real exploitability per device, plus the only native packet capture in connected device security. Also highly rated by Gartner and KLAS.
Claroty	Industrial and critical infrastructure cyber-physical environments	Agentless, cloud/on-prem	Industrial protocol depth, threat detection, and secure remote access for OT
Ordr	Teams that put microsegmentation ahead of patching and targeted remediation, and prioritize AI-assisted segmentation workflows	Agentless, segmentation-first approach	AI-generated segmentation policy with natural-language orchestration through Ordr IQ
Nozomi Networks	OT, industrial, and critical infrastructure environments	Agentless hardware/virtual appliances with cloud management	Deep OT protocol support, continuous threat monitoring, and scalable sensor architecture
Dragos	ICS/OT cyber defense in energy, manufacturing, and utility sectors; existing customers of Accenture (the majority owner of Dragos)	Passive network monitoring combined with specialized ICS threat intelligence	Specialized ICS/OT threat intelligence, playbook-driven response, and vulnerability analysis in core industries
Tenable	Hybrid IT/OT environments needing unified vulnerability management	Hybrid active querying and passive monitoring integrated into Tenable One	Deep integration with IT vulnerability management workflows and active PLC querying
Microsoft Defender for IoT	Organizations heavily invested in Microsoft XDR and Sentinel SIEM	Agentless network sensors feeding into Microsoft Defender XDR and Sentinel	Native integration across Microsoft security tools, Defender portal consolidation, and Azure threat intelligence
Forescout (Vistaro)	Enterprises that want the security platform to also serve as the NAC instead of the networking/switch layer	Agentless, with more than 30 discovery methods	Access control, segmentation, and discovery from a single vendor with a long NAC history

Asimily’s Approach: From Risk Intelligence to Enforced Policy

Asimily is the Proactive Cyber Asset Defense Platform for IoT, OT, IoMT, and IT. It builds an agentless, continuously updated inventory of every connected asset safely without operational disruption. Using patent-based ATT&CK Analysis, Asimily isolates the 1% of devices driving the vast majority of actionable risk by evaluating specific network topology and real-world exploitability.

From there, Asimily closes exposures (or recommends closures) with the right technique for each device: segmentation, patching, or a targeted mitigation drawn from Asimily Labs’ work. More practically, Risk Simulator models the risk reduction of an action before a team commits to the time and effort needed. For segmentation, Asimily recommends, creates, simulates, and enforces policy through NACs such as Extreme, Cisco ISE, Aruba ClearPass, and Arista. Policies can be updated to match intent, not blindly applying ACLs.

Capability	What It Does
Inventory and Visibility	Agentless discovery and classification of every IoT, OT, IoMT, and IT asset, including services, connections, and firmware versions (for relevant devices).
ATT&CK Analysis	Determines real exploitability per device and network, producing the smallest remediation list for the same risk reduction
Policy Auto-Recommendation and Policy Creation	Shows where to start and generates policy in each NAC’s native format
Policy Simulation	Validates a policy against real, observed network traffic and shows exactly which devices and connections would be affected before anything deploys
Continuous Segmentation and Policy Audit	Keeps policy aligned as devices are patched, moved, added, or decommissioned, and merges, deduplicates, and optimizes policies to prevent sprawl and overtaxing of limited switch memory
IoT Patching	Applies fixes where devices can be patched, manually or automatically.
Configuration Control	Detects configuration drift and restores from known, valid snapshots.
Threat and Response	Anomaly detection with protective actions up to quarantine, plus native packet capture for forensic incident response
Governance, Risk, and Compliance	Compliance mapping to frameworks including NIST, CIS, NIS2, and CMMC (among many others), with an auditable record of enforcement for audits and board reviews

Additionally, Asimily won the Operational Technology and Industrial IoT Security category in the 2026 Merit Awards.

Frequently Asked Questions

What Are the Top Armis Alternatives for 2026?

The leading alternatives to Armis include Asimily, Claroty, Dragos, Forescout, Microsoft, Nozomi Networks, Ordr, and Tenable. Each platform varies in focus, including specialists on technology or industry as well as generalists like Microsoft.

What Happens to Armis After the ServiceNow Acquisition?

Following ServiceNow’s completion of the acquisition in April 2026, Armis asset intelligence is being integrated into ServiceNow’s workflow, risk prioritization, and reporting platforms. Organizations are evaluating whether future roadmap investments and packaging align with standalone connected device security requirements.

Why Do Security Teams Replace Armis?

Teams often consider alternatives due to excessive alert volume from non-prioritized CVSS scores, complex requirements for active microsegmentation enforcement, or the need for deeper specialized features in medical (IoMT) or industrial (OT) environments.

Do Armis Alternatives Require Software Agents?

No. Leading alternatives like Asimily operate completely agentlessly, using passive network traffic analysis, native switch integrations, and API integrations to identify and secure connected devices without risking device disruption.

Choosing the Right Armis Alternative

Start with your riskiest devices, not a vendor’s feature list. Ask each finalist to show which devices in your environment carry exploitable risk, why each one is ranked where it is, and what it would take to contain them. How did they determine if a vulnerability was exploitable: a simple rubric, or a detailed, patent-based analysis?

Then test the path to enforcement. Ask each finalist to show the impact of a proposed policy against your observed traffic before anything changes, using your own NAC, and to explain how that policy stays current as devices move and change. Your IT, OT, and facilities colleagues will want that answer before they agree to any enforcement.

Further Reading

[Related: IoT Security FAQ: Securing, Prioritizing, and Mitigating Risk Across Enterprise IoT Devices]

[Related: OT Security FAQ: Visibility, Vulnerability Management, and Operational Protection Without Downtime]

[Related: Microsegmentation FAQ: Tools, Zero Trust, and Segmenting IoT and OT Devices Without Disruption]