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Cybersecurity · head to head

Bitwarden vs Tenable Nessus

Bitwarden logo

Bitwarden

Cybersecurity

Open source password management for everyone

From
Free
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Bitwarden the integrated TOTP authenticator, encrypted file attachments, vault health reports and Emergency Access are all withheld from the free plan and need Premium at $1.65 per month; Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • They diverge on capability: Bitwarden covers Unlimited password storage, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Bitwarden and Tenable Nessus actually diverge.

Attributes where Bitwarden and Tenable Nessus differ
AttributeBitwardenTenable Nessus
Pricing modelfreemiumsubscription
PlatformsWindows, Macos, Linux, Ios, Android, Web, CliWindows, Linux, Macos, Cloud
Founded20162002

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Bitwarden

  • Unlimited password storage
  • Cross-platform sync
  • Secure password sharing
  • Password generator
  • Two-factor authentication
  • Encrypted file attachments
  • Vault health reports
  • Emergency access

Only in Tenable Nessus

  • Network scanning
  • Vulnerability detection
  • Configuration assessment
  • Malware detection
  • Compliance checking
  • Cloud security assessment
  • Mobile scanning
  • API access

What people use each for

The jobs each tool is most often brought in to do.

Bitwarden

  • Personal password managementnot Tenable Nessus
  • Team credential sharingnot Tenable Nessus
  • Enterprise securitynot Tenable Nessus
  • Compliance requirementsnot Tenable Nessus
  • Developer secrets managementnot Tenable Nessus

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot Bitwarden
  • Configuration and compliance auditing against hardening benchmarksnot Bitwarden
  • Point in time assessments by consultants and penetration testersnot Bitwarden

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Bitwarden

  • The integrated TOTP authenticator, encrypted file attachments, vault health reports and Emergency Access are all withheld from the free plan and need Premium at $1.65 per month
  • Free accounts can share vault items with one other Bitwarden user and no more
  • File storage is capped at 5 GB on Premium and 5 GB personal plus 5 GB family on the Families plan
  • Two-step login accepts up to 10 hardware security keys per account
  • The Families plan is capped at 6 people, so a seventh member means moving to a Teams subscription at $4 per user per month

Tenable Nessus

  • Nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Support beyond the base entitlement costs an extra $400 per year for Advanced Support with 24x365 phone and chat access
  • The on demand training course is a separate $275 purchase for a single person for one year
  • Multi year discounts require paying for two or three years up front

Pricing, plan by plan

Bitwarden

Free
  • FreeFree
    • Basic password management
    • Zero-knowledge encryption
    • Advanced two-step login
  • Premium$1.65/month
    • Integrated authenticator
    • File attachments
    • Emergency access
  • Premium$19.8/year
  • Families$3.99/month
    • Up to 6 premium accounts
    • Unlimited sharing and collections
    • Organization storage included

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2600/year
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5200/year
    • All Professional features
    • Cloud integration
    • Advanced reporting

Which should you pick?

Choose Bitwarden if

  • You need unlimited password storage.
  • You want to start without paying.
  • You work on Windows, Macos, Linux, Ios, Android, Web, Cli.
  • You also want cross-platform sync.
Bitwarden review

Choose Tenable Nessus if

  • You need network scanning.
  • You want to start without paying.
  • You work on Windows, Linux, Macos, Cloud.
  • You also want vulnerability detection.
Tenable Nessus review

Questions people ask

Is Bitwarden or Tenable Nessus better?
Neither clearly leads. Bitwarden starts at Free and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bitwarden or Tenable Nessus?
Bitwarden starts at Free and Tenable Nessus at Free.
Does Bitwarden or Tenable Nessus run on more platforms?
Bitwarden runs on Windows, Macos, Linux, Ios, Android, Web, Cli. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Bitwarden for free?
Both have a free tier, so you can try either at no cost before committing.
What is Bitwarden best used for?
Bitwarden is most often used for personal password management, team credential sharing, enterprise security, compliance requirements. Of those, personal password management and team credential sharing are not what Tenable Nessus is typically brought in for.
What can Bitwarden do that Tenable Nessus cannot?
Bitwarden covers Unlimited password storage, Cross-platform sync, Secure password sharing, Password generator. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection.

Answered from the vendors’ own pages

Bitwarden: Does Bitwarden have a free plan?

Yes, Bitwarden offers a free tier with basic password management, zero-knowledge encryption, advanced two-step login, and unlimited devices across browser, mobile, and desktop apps.

Source
Tenable Nessus: What are the three Nessus offerings?

Nessus Essentials is a free introductory offering for educators, students, and career starters, limited to 16 IPs for scanning. Nessus Professional is designed for consultants and SMBs, providing unlimited IT scans across any location. Nessus Expert is the premium offering extending Professional with web application scanning, infrastructure-as-code scanning, and external attack surface assessment up to 5 domains.

Source
Bitwarden: How much does Bitwarden Premium cost?

Bitwarden Premium costs $1.65 per month billed annually at $19.80 per year, including integrated authenticator, file attachments, emergency access, and security reports.

Source
Tenable Nessus: What OS platforms does Nessus support?

Nessus runs on Debian/Kali Linux, Fedora, FreeBSD, Mac OS X, Red Hat/CentOS, SUSE Linux, Ubuntu, and various Windows versions including Server 2008, 2012, and Windows 7-10.

Source
Bitwarden: What is the difference between Bitwarden Teams and Enterprise?

Teams plan at $4 per user per month (annual billing) includes centralized ownership and secure credential sharing. Enterprise at $6 per user per month adds granular access control, passwordless SSO, account recovery, self-hosting, and complimentary Families plans for all users.

Source
Tenable Nessus: Can I use Nessus to scan third-party networks as a consultant?

Yes, Tenable permits you to use Nessus to scan third-party networks. Nessus Professional is ideal for consultants.

Source
Tenable Nessus: Can Nessus perform PCI external scanning?

Yes, you can use Nessus Professional to perform external network scans as required by the PCI DSS 11.2.2 requirement.

Source
Tenable Nessus: What additional features does Nessus Expert provide?

Web application scanning, which is dynamic application security testing (DAST) providing comprehensive visibility and insight into web application security issues; scanning code repositories for vulnerabilities; and assessing external attack surface with subdomain discovery.

Source
Tenable Nessus: What support options exist for Nessus Professional?

Standard Support includes software upgrades, patches, plugin access, and 24x7 support via chat and community portal. Advanced Support adds 24x7 phone access and committed SLAs: P1 less than 2 hours, P2 less than 4 hours, P3 less than 12 hours, P4 less than 24 hours.

Source
Tenable Nessus: How frequently are Nessus plugins updated?

Nessus plugins are updated daily, based on when vendors and security research sites publish new vulnerabilities.

Source
Tenable Nessus: How does licensing work in virtual machine environments?

Whether you are using Nessus in a physical or a virtual environment, the IP addresses or hosts that you are scanning from must be licensed.

Source
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