SIDE BY SIDE · FACTS ONLY

Sevco vs Tenable: asset inventory facts side by side

SHORT ANSWER

Sevco describes 2 of the five approaches on the pages we read and Tenable describes 3; they differ on CAASM aggregation and External attack surface management. On collection, Sevco works without new agents and Tenable does not describe its collection method on the pages we read. Many estates run two of these approaches together, so the question is often which pair, not which one; we do not score either.

By The Inventory Desk · CAASM Finder · Published 2026-10-11

Desk research from public vendor pages read on 27 September, 11 October and 15 October 2026. Profiles follow our published method; we did not run the products.

How do their approaches compare?

Top bar: Sevco Security
Lower bar, lighter: Tenable One

Full bar: described on the vendor's pages we read
Hatched bar: described with a condition (another product, a higher tier, or part of the approach)
Stub: not in our sources (it may exist; we did not find it)

The bars show what each vendor's own pages describe, or how your answers weigh the five approaches. They are not a measure of how well a product works.

What are the facts, side by side?

From each vendor's own pages. Differs marks rows where the recorded status or check value differs.
Fact	Sevco Security	Tenable One
Positioning	Sevco describes itself as an exposure management platform that centralizes vulnerabilities and security control gaps, prioritizes them, and automates and validates remediation, with an accurate asset inventory and asset intelligence as its foundation.	Tenable's exposure management platform. Tenable Attack Surface Management, part of Tenable One, maps external assets from a map of more than 5 billion assets; Tenable One adds attack path analysis, Hexa AI remediation and connectors for third-party data.
Deployment	Installs in 30 minutes or less with no agent, scanner or network monitor, and with easy remote setup. Source: Sevco Security platform · Read 15 Oct 2026	Tenable Attack Surface Management is sold through a demo request, not online. Source: Tenable: buy · Read 27 Sep 2026
CAASM aggregationDiffers	Described Aggregates and correlates data from existing IT and security tools behind and in front of the firewall; an Asset Correlation Engine handles correlation, reconciliation and deduplication. Source: Sevco Security platform · Read 15 Oct 2026	With a condition Tenable One Connectors bring third-party data into the platform; a unified asset inventory is not described in detail on the pages we read. Source: Tenable One · Read 27 Sep 2026
Agent-based inventory	Not in our sources Not described on the pages we read.	Not in our sources Not described on the pages we read.
External attack surface managementDiffers	Not in our sources Not described on the pages we read.	Described Identifies domains related to your inventory from a map of 5 billion+ assets with 200+ metadata fields. Source: Tenable Attack Surface Management · Read 27 Sep 2026
CMDB-centred inventory	Not in our sources Not described on the pages we read.	Not in our sources Not described on the pages we read.
Exposure management	Described Describes itself as an exposure management platform that centralizes vulnerabilities and security control gaps, prioritizes them, and automates and validates remediation. Source: Sevco Security home page · Read 15 Oct 2026	Described Tenable One is Tenable's exposure management platform, with attack path analysis across 150+ techniques and Hexa AI automated remediation. Source: Tenable One · Read 27 Sep 2026
Servers and network devicesDiffers	Not in our sources	Partly Tenable One includes vulnerability management alongside external attack surface data. Source: Tenable: buy · Read 27 Sep 2026
Cloud workloads	Not in our sources	Not in our sources
SaaS applications	Not in our sources	Not in our sources
Identities as assets	Not in our sources	Not in our sources
Off-network laptops	Not in our sources	Not in our sources
OT and IoT devices	Not in our sources	Not in our sources
Internet-facing discoveryDiffers	Not in our sources	Matches A 5 billion+ asset map with 200+ metadata fields. Source: Tenable Attack Surface Management · Read 27 Sep 2026
Offers its own agent	Not in our sources	Not in our sources
Works without new agentsDiffers	Matches No agent, scanner or network monitor to install. Source: Sevco Security home page · Read 15 Oct 2026	Not in our sources
Merges records from several sourcesDiffers	Matches An Asset Correlation Engine handles correlation, reconciliation and deduplication. Source: Sevco Security platform · Read 15 Oct 2026	Partly Tenable One Connectors bring third-party data into the platform. Source: Tenable One · Read 27 Sep 2026
Feeds or updates a CMDB	Not in our sources	Not in our sources
Cross-source queries and reports	Not in our sources	Not in our sources
Workflows, tickets or actions	Partly Action Center offers pre-defined automated remediation, validated on the asset rather than when a ticket closes. Source: Sevco Security home page · Read 15 Oct 2026	Partly Hexa AI orchestrates automated remediation in Tenable One. Source: Tenable One · Read 27 Sep 2026
Price or pricing basis publishedDiffers	Not in our sources	Partly Attack Surface Management is not sold online; Tenable publishes adjacent prices, such as Tenable One Vulnerability Management at $3,700 for one year for up to 250 assets. Source: Tenable: buy · Read 27 Sep 2026
Free tier or trialDiffers	Not in our sources	Partly Free trials for Tenable One Vulnerability Management and Nessus; the Tenable One platform and its exposure products are demo only. Source: Tenable free trials · Read 11 Oct 2026
Platform it is part of	None	Tenable: External findings sit in Tenable One next to Tenable vulnerability data. Source: Tenable One · Read 27 Sep 2026
Integrations	Aggregates data from existing IT and security tools; an integration count or named integrations are not published on the pages we read. Source: Sevco Security platform · Read 15 Oct 2026	Tenable One Connectors bring third-party data into the platform. Source: Tenable One · Read 27 Sep 2026
Price	Not published Not published. Source: Sevco Security home page · Read 15 Oct 2026	Attack Surface Management: demo request only. Adjacent published price: Tenable One Vulnerability Management at $3,700 for one year for up to 250 assets. Source: Tenable: buy · Read 27 Sep 2026

Where do they differ?

CAASM aggregation: Sevco describes it; Tenable describes it with a condition.
External attack surface management: Sevco is not in our sources; Tenable describes it.
Servers and network devices: Sevco is not in our sources; Tenable partly matches.
Internet-facing discovery: Sevco is not in our sources; Tenable matches.
Works without new agents: Sevco matches; Tenable is not in our sources.
Merges records from several sources: Sevco matches; Tenable partly matches.
Price or pricing basis published: Sevco is not in our sources; Tenable partly matches.
Free tier or trial: Sevco is not in our sources; Tenable partly matches.

Can they work together?

Neither vendor's pages we read name the other as an integration. That does not mean they cannot work together; ask both vendors.

Choose Sevco if

You want an asset inventory built from the tools you already run, with no new agents
You want remediation tracked until it is validated on the asset

Choose Tenable if

You already run Tenable vulnerability management
Your question is which exposures to fix first more than which assets exist

Which limits should you check?

Sevco

No price, trial, integration count or named integrations published on the pages we read.
Coverage of SaaS, identities, OT and external assets, query capabilities and data freshness are not described on the pages we read.

Tenable

Attack Surface Management and the Tenable One platform are demo only; free trials cover Vulnerability Management and Nessus.
A unified internal asset inventory, SaaS apps and identities are not described on the pages we read.

Put Sevco and Tenable in the asset census with others Run the finder

Questions people ask

Is Sevco or Tenable better?

Neither is scored on this site. Sevco describes 2 of five approaches and Tenable 3 on the pages we read, and they differ on 8 recorded facts. Which fits depends on where your assets live, whether you can install agents, your CMDB and your tools; the finder checks those.

Do Sevco and Tenable work with a CMDB?

Sevco: Not in our sources. Tenable: Not in our sources.

Do Sevco or Tenable publish prices?

Sevco: Not published. Tenable: Attack Surface Management: demo request only. Adjacent published price: Tenable One Vulnerability Management at $3,700 for one year for up to 250 assets.