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Developer Tools · head to head

GitHub vs Tenable Nessus

GitHub logo

GitHub

Developer Tools

Where the world builds software

From
Free
Free plan
Yes
Visit GitHubFull review
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Free plan
Yes
Visit Tenable NessusFull review

The short version

  • GitHub is a development platform inspired.
  • Free plans on both; paid from $4/mo and $2600/yr.
  • Only GitHub lists git repositories; only Tenable Nessus lists vulnerability detection.
  • Where GitHub falls short: acquired by Microsoft in 2018, reducing pure independence despite operational autonomy.
  • Where Tenable Nessus falls short: nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

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

Attributes where GitHub and Tenable Nessus differ
AttributeGitHubTenable Nessus
PlatformsWeb, Windows, macOS, iOS, AndroidWindows, Linux, macOS, Web
CategoryDeveloper ToolsCybersecurity
Founded20082002

Identical on both: starting price (Free), pricing model (Subscription), free tier (Yes).

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 GitHub

  • Git repositories
  • Pull requests
  • Code review
  • Issues & projects
  • GitHub Actions CI/CD
  • GitHub Pages
  • Security scanning
  • Dependency management

Only in Tenable Nessus

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

Both cover

  • Jira
  • AWS
  • Azure

What people use each for

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

GitHub

  • Version controlnot Tenable Nessus
  • Code collaborationnot Tenable Nessus
  • CI/CD pipelinesnot Tenable Nessus
  • Project managementnot Tenable Nessus
  • Documentation hostingnot Tenable Nessus

Tenable Nessus

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

Where each one falls short

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

GitHub

  • Acquired by Microsoft in 2018, reducing pure independence despite operational autonomy
  • Primary focus on source control differs from purpose-built project management tools like Jira
  • Pricing for enterprise features and private repositories adds up compared to some self-hosted alternatives

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

GitHub

Free
  • FreeFree
    • Unlimited public/private repos
    • 2,000 CI/CD minutes/month
    • 500MB package storage
  • Team$4/mo
    • Everything in Free
    • 3,000 CI/CD minutes/month
    • 2GB package storage
  • Enterprise$21/mo
    • Everything in Team
    • 50,000 CI/CD minutes/month
    • 50GB package storage

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2,600/yr
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5,200/yr
    • All Professional features
    • Cloud integration
    • Advanced reporting

Which should you pick?

Choose GitHub if

  • You need git repositories.
  • You want to start without paying.
  • You work on Web, Windows, macOS, iOS, Android.
  • You also want pull requests.
GitHub review

Choose Tenable Nessus if

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

Questions people ask

Is GitHub or Tenable Nessus better?
Neither clearly leads. GitHub 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, GitHub or Tenable Nessus?
GitHub starts at Free and Tenable Nessus at Free.
Does GitHub or Tenable Nessus run on more platforms?
GitHub runs on Web, Windows, macOS, iOS, Android. Tenable Nessus runs on Windows, Linux, macOS, Web.
Can I use GitHub for free?
Both have a free tier, so you can try either at no cost before committing.
What is GitHub best used for?
GitHub is most often used for version control, code collaboration, ci/cd pipelines, project management. Of those, version control and code collaboration are not what Tenable Nessus is typically brought in for.
What can GitHub do that Tenable Nessus cannot?
GitHub covers Git repositories, Pull requests, Code review, Issues & projects. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection. Both handle Jira, AWS, Azure.

Answered from the vendors’ own pages

GitHub: What is a Git repository and how does GitHub use it?

A repository is the centralized database that stores the complete collection of files and folders for a codebase, along with the revision history. GitHub uses Git to provide distributed version control access to repositories with version tracking, branching, and collaboration features.

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
GitHub: How does GitHub authentication work?

When you connect to a GitHub repository from Git, you need to authenticate with GitHub using either HTTPS or SSH. GitHub supports multiple authentication methods including passwords, personal access tokens, SSH keys, and GitHub Apps.

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
GitHub: How long has GitHub been operating?

GitHub was founded in 2008 and launched publicly on April 10, 2008, making it the dominant git hosting platform for nearly two decades.

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
GitHub: Who owns GitHub and when did the acquisition occur?

Microsoft acquired GitHub for $7.5 billion USD, with the deal announced June 4, 2018 and completed October 26, 2018. GitHub operates as an independent subsidiary within Microsoft.

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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