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Developer Tools · head to head

Notepad++ vs Tenable Nessus

Notepad++ logo

Notepad++

Developer Tools

Free, lightweight source code and text editor for Windows

From
Free
Free plan
Yes
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Notepad++ windows-only, with no official native macOS or Linux build.; 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: Notepad++ covers Syntax Highlighting, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Notepad++ and Tenable Nessus actually diverge.

Attributes where Notepad++ and Tenable Nessus differ
AttributeNotepad++Tenable Nessus
Pricing modelopen-sourcesubscription
PlatformswindowsWindows, Linux, Macos, Cloud
CategoryDeveloper ToolsCybersecurity
Founded20032002

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

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 Notepad++

  • Syntax Highlighting
  • Tabbed Editing
  • Plugin System
  • Regular Expression Search
  • Function List

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.

Notepad++

  • Quick editing of code and config files on Windowsnot Tenable Nessus
  • Batch find-and-replace across multiple files with regexnot Tenable Nessus
  • Lightweight alternative to a full IDE for scriptingnot Tenable Nessus
  • Viewing and editing logs or large text filesnot Tenable Nessus

Tenable Nessus

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

Where each one falls short

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

Notepad++

  • Windows-only, with no official native macOS or Linux build.
  • Lacks built-in debugging or project/build management found in full IDEs.
  • Plugin quality and maintenance varies since they are community-contributed.
  • No built-in version control integration beyond what plugins provide.

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

Notepad++

Free
  • FreeFree
    • Full editor and plugin ecosystem, no paid tiers

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 Notepad++ if

  • You need syntax highlighting.
  • You want to start without paying.
  • You work on windows.
  • You also want tabbed editing.
Notepad++ 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 Notepad++ or Tenable Nessus better?
Neither clearly leads. Notepad++ 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, Notepad++ or Tenable Nessus?
Notepad++ starts at Free and Tenable Nessus at Free.
Does Notepad++ or Tenable Nessus run on more platforms?
Notepad++ runs on windows. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Notepad++ for free?
Both have a free tier, so you can try either at no cost before committing.
What is Notepad++ best used for?
Notepad++ is most often used for quick editing of code and config files on windows, batch find-and-replace across multiple files with regex, lightweight alternative to a full ide for scripting, viewing and editing logs or large text files. Of those, quick editing of code and config files on windows and batch find-and-replace across multiple files with regex are not what Tenable Nessus is typically brought in for.
What can Notepad++ do that Tenable Nessus cannot?
Notepad++ covers Syntax Highlighting, Tabbed Editing, Plugin System, Regular Expression Search. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection.

Answered from the vendors’ own pages

Notepad++: Is Notepad++ free?

Yes, Notepad++ is free and open-source software distributed under the GNU General Public License, with no paid tiers.

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
Notepad++: What license does Notepad++ use?

Notepad++ is licensed under the GNU General Public License v2.0 (GPLv2), meaning its source code is freely available and modifiable under GPL terms.

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
Notepad++: Which operating systems does Notepad++ support?

Notepad++ runs exclusively on Microsoft Windows; there is no official native build for macOS or Linux.

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
Notepad++: How do I install plugins in Notepad++?

Plugins are installed and managed through the built-in Plugins Admin (plugin manager), which lists community plugins available for download and update.

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
Notepad++: Where can I get help or documentation for Notepad++?

Official documentation is at the User Manual site, and community support is available through the Notepad++ community forum and GitHub issue tracker.

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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