Best Tenable Nessus Alternatives in 2026
The top Tenable Nessus alternatives are Vornin, Intruder and OpenVAS: 15 vulnerability scanning software our editors would look at instead of Tenable Nessus, in our ranking order.
Tenable Nessus: A capable network scanner with broad assessment coverage, but a high annual starting price. Where it falls short: nessus professional starts at $4,790 per year..
Switching from Tenable Nessus? For most vulnerability scanning software buyers the best Tenable Nessus alternative is Vornin, built for small teams needing broad cloud scanning. On a budget, Rapid7 InsightVM starts at $1.62/mo. OpenVAS offers the most asset limit (150 assets).
Why People Look for a Tenable Nessus Alternative
- Nessus Professional starts at $4,790 per year
- There is no permanent free plan for ongoing use
- The on-premises model may not suit cloud-only security teams
- No free plan — 7 of the alternatives below have it
Quick Picks by What You Need
- Best overallVornin9.4
Small teams needing broad cloud scanning
Visit Vornin - Lowest priceRapid7 InsightVM8.7
Paid plans from $1.62/mo
Visit Rapid7 InsightVM - Best free optionVornin9.4
Has a free plan (Tenable Nessus has none)
Visit Vornin - Most asset limitOpenVAS9.0
150 assets
Visit OpenVAS
All 15 Tenable Nessus Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forSmall teams needing broad cloud scanning
- Better than Tenable Nessus:
- Free plan
- Editor score 9.4 vs 7.5
Broad cloud vulnerability coverage with a free tier for up to five assets.
- Continuous scanning
- Authenticated scanning
9.4/10★★★★★Visit Vornin -
Best forBroad scanning with a free starting tier
- Better than Tenable Nessus:
- Free plan
- Editor score 9.3 vs 7.5
Broad vulnerability coverage with a free tier and expansion paths for larger environments.
- Continuous scanning
- Authenticated scanning
9.3/10★★★★★Visit Intruder -
Best forTeams wanting open-source network coverage
- Better than Tenable Nessus:
- Free plan
- Editor score 9.0 vs 7.5
A broad open-source scanner with authenticated testing, continuous scans and compliance features.
- Continuous scanning
- Authenticated scanning
9.0/10★★★★☆Visit OpenVAS -
Best forMSPs needing broad continuous scanning
- Better than Tenable Nessus:
- Editor score 8.8 vs 7.5
A wide MSP-focused scanning platform with a $300 monthly starting point.
- Continuous scanning
- Authenticated scanning
8.8/10★★★★☆Visit ConnectSecure -
Best forMixed environments needing mature VM workflows
- Better than Tenable Nessus:
- Editor score 8.7 vs 7.5
A mature hybrid platform for scanning, prioritizing, and tracking vulnerabilities across mixed environments.
- Authenticated scanning
8.7/10★★★★☆Visit Rapid7 -
Best forHybrid enterprises needing deep assessment
- Better than Tenable Nessus:
- Editor score 8.6 vs 7.5
Deep hybrid vulnerability assessment with advanced prioritization and quote-based pricing.
- Authenticated scanning
8.6/10★★★★☆Visit Holm Security -
Best forLarge enterprises with complex asset estates
- Better than Tenable Nessus:
- Editor score 8.5 vs 7.5
A broad vulnerability platform for enterprises managing complex, hybrid asset estates.
- Continuous scanning
- Authenticated scanning
8.5/10★★★★☆Visit Qualys VMDR -
Best forOn-premises enterprises needing centralized control
- Better than Tenable Nessus:
- Editor score 8.4 vs 7.5
A centralized, on-premises platform for broad assessment, prioritization, and remediation tracking.
- Authenticated scanning
8.4/10★★★★☆Visit Tenable -
Best forCloud VM teams needing advanced prioritization
- Better than Tenable Nessus:
- Editor score 8.3 vs 7.5
A strong cloud VM platform for advanced prioritization, with a higher annual cost and no web app scanning.
- Authenticated scanning
8.3/10★★★★☆Visit Tenable -
Best forTeams combining scanning with automated remediation
- Better than Tenable Nessus:
- Editor score 8.2 vs 7.5
Combines broad vulnerability scanning with prioritization, patching, and remediation verification.
8.2/10★★★★☆Visit Vicarius -
Best forSmall teams needing validated network scans
- Better than Tenable Nessus:
- Free plan
- Editor score 8.1 vs 7.5
A broad scanner for small teams that need validated network findings and scheduled coverage.
- Continuous scanning
- Authenticated scanning
Free plan · 7-day trial Our Pentest-Tools Network Vulnerability Scanner verdict → Visit Pentest-Tools8.1/10★★★★☆Visit Pentest-Tools -
Best forEndpoint-focused teams seeking strong value
- Better than Tenable Nessus:
- Free plan
- Editor score 8.0 vs 7.5
Endpoint-focused vulnerability management with scanning, prioritization, patching, and compliance tools.
- Authenticated scanning
8.0/10★★★★☆Visit ManageEngine -
Best forAWS-centric security teams
- Better than Tenable Nessus:
- Editor score 7.9 vs 7.5
A strong fit for AWS security teams needing continuous, multi-workload scanning.
- Continuous scanning
7.9/10★★★★☆Try Amazon Inspector -
Best forOpen-source teams needing agent telemetry
- Better than Tenable Nessus:
- Free plan
- Editor score 7.8 vs 7.5
A self-hosted scanner for teams that need open-source visibility across networks and hosts.
- Continuous scanning
7.8/10★★★★☆Visit Sirius -
Best forLow-cost open-source network assessments
- Better than Tenable Nessus:
- Free plan
- Editor score 7.7 vs 7.5
An open-core scanner for local, air-gapped network assessments and compliance reporting.
7.7/10★★★★☆Visit NSAuditor AI
Tenable Nessus Alternatives: Common Questions
What is the best alternative to Tenable Nessus?
Vornin: #1 in our Vulnerability Scanning Software ranking, with an editor score of 9.4 out of 10. Broad cloud vulnerability coverage with a free tier for up to five assets.
Is there a free alternative to Tenable Nessus?
Yes. Vornin, Intruder, OpenVAS, Pentest-Tools Network Vulnerability Scanner and ManageEngine Vulnerability Manager Plus have a free plan or a free tier (7 of the 15 alternatives on this page).
What is the cheapest paid alternative to Tenable Nessus?
Of the alternatives here that publish a price, Rapid7 InsightVM starts lowest, at $1.62/mo.
Why do people look for Tenable Nessus alternatives?
Nessus Professional starts at $4,790 per year; There is no permanent free plan for ongoing use; The on-premises model may not suit cloud-only security teams.
Which Tenable Nessus alternative has the most asset limit?
OpenVAS, with 150 assets.
How do I switch from Tenable Nessus?
Export your data from Tenable Nessus (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel Tenable Nessus.
How to Switch from Tenable Nessus
- Export your data from Tenable Nessus (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel Tenable Nessus.
Tenable Nessus vs Each Alternative
| # | Tool | Free plan | Paid from | Deployment model | Supported targets | Authenticated scanning | Continuous scanning | Score |
|---|---|---|---|---|---|---|---|---|
| 16 | Tenable Nessus | No | $4,790/yr | On_premises | IP addresses, operating systems, network devices, databases, applications, SCADA systems | Yes | Yes | 7.5 |
| 1 | Vornin | Yes | €99/mo | Cloud | Hostnames, IP addresses, IP ranges, URLs, web applications, APIs, networks, code repositories, containers, Kubernetes clusters, and cloud accounts | Yes | Yes | 9.4 |
| 2 | Intruder | Yes | Hybrid | external IP addresses, domains, subdomains, internal Windows/macOS/Linux devices, web applications, APIs, cloud environments, container images | Yes | Yes | 9.3 | |
| 3 | OpenVAS | Yes | On_premises | network services, servers, applications, endpoints, container images | Yes | Yes | 9.0 | |
| 4 | ConnectSecure | No | Hybrid | networks, endpoints, applications, websites, APIs, ports, cloud assets, Microsoft 365, Google Workspace, Active Directory, Entra ID, firewalls | Yes | Yes | 8.8 | |
| 5 | Rapid7 InsightVM | $1.62/mo | Hybrid | Yes | 8.7 | |||
| 6 | Holm Security Vulnerability Management | No | Hybrid | Yes | 8.6 | |||
| 7 | Qualys VMDR | No | Hybrid | routers, switches, firewalls, servers, workstations, databases, printers, wireless access devices, cloud assets, containers, mobile devices, OT and IoT assets | Yes | Yes | 8.5 | |
| 8 | Tenable Security Center | No | Yes | 8.4 | ||||
| 9 | Tenable One Vulnerability Management | No | $3,500/unit usage-based | Cloud | Yes | 8.3 | ||
| 10 | Vicarius vRx | No | Hybrid | 8.2 | ||||
| 11 | Pentest-Tools Network Vulnerability Scanner | Yes | $95/mo | Cloud | network hosts, hostnames, IP addresses, public-facing infrastructure, internal networks, private clouds | Yes | Yes | 8.1 |
| 12 | ManageEngine Vulnerability Manager Plus | Yes | $695/unit/yr | Hybrid | Yes | 8.0 | ||
| 13 | Amazon Inspector | No | Cloud | Amazon EC2 instances; Amazon ECR container images; AWS Lambda functions; code repositories; CI/CD container images; Microsoft Azure VMs; Azure Function Apps; Azure Container Registry images | Yes | 7.9 | ||
| 14 | Sirius | Yes | Free | On_premises | network infrastructure, hosts, cloud, agents | Yes | 7.8 | |
| 15 | NSAuditor AI | Yes | $470/device/yr | 7.7 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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