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Developer Tools · head to head

Swagger UI vs Notepad++

Swagger UI logo

Swagger UI

Developer Tools

Interactive API documentation generated from OpenAPI specs

From
Free
Rated
-
Full reviewWebsite
Notepad++ logo

Notepad++

Developer Tools

Free, lightweight source code and text editor for Windows

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Swagger UI only as good as the specification: a thin OpenAPI file produces thin documentation; Notepad++ windows-only, with no official native macOS or Linux build.
  • They diverge on capability: Swagger UI covers OpenAPI rendering, Notepad++ covers Syntax Highlighting.

Where they differ

Only the attributes on which Swagger UI and Notepad++ actually diverge.

Attributes where Swagger UI and Notepad++ differ
AttributeSwagger UINotepad++
Pricing modelOpen source, no licence feeopen-source
PlatformsWeb, Self-hosted, Dockerwindows
FoundedUnknown2003

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

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 Swagger UI

  • OpenAPI rendering
  • Try it out
  • Schema display
  • Self-hostable

Only in Notepad++

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

What people use each for

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

Swagger UI

  • Publishing API documentation that stays in step with the specificationnot Notepad++
  • Letting developers try endpoints before writing any client codenot Notepad++
  • Internal API discovery across teamsnot Notepad++

Notepad++

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

Where each one falls short

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

Swagger UI

  • Only as good as the specification: a thin OpenAPI file produces thin documentation
  • Default presentation is dated compared with modern documentation tools
  • Large specifications render slowly and become hard to navigate
  • Try it out against production needs care with authentication and CORS, and is often disabled as a result

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.

Pricing, plan by plan

Swagger UI

Free
  • Swagger UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

Notepad++

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

Which should you pick?

Choose Swagger UI if

  • You need openapi rendering.
  • You want to start without paying.
  • You work on Web, Self-hosted, Docker.
  • You also want try it out.
Swagger UI review

Choose Notepad++ if

  • You need syntax highlighting.
  • You want to start without paying.
  • You work on windows.
  • You also want tabbed editing.
Notepad++ review

Questions people ask

Is Swagger UI or Notepad++ better?
Neither clearly leads. Swagger UI starts at Free and Notepad++ at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Swagger UI or Notepad++?
Swagger UI starts at Free and Notepad++ at Free.
Does Swagger UI or Notepad++ run on more platforms?
Swagger UI runs on Web, Self-hosted, Docker. Notepad++ runs on windows.
Can I use Swagger UI for free?
Both have a free tier, so you can try either at no cost before committing.
What is Swagger UI best used for?
Swagger UI is most often used for publishing api documentation that stays in step with the specification, letting developers try endpoints before writing any client code, internal api discovery across teams. Of those, publishing api documentation that stays in step with the specification and letting developers try endpoints before writing any client code are not what Notepad++ is typically brought in for.
What can Swagger UI do that Notepad++ cannot?
Swagger UI covers OpenAPI rendering, Try it out, Schema display, Self-hostable. Notepad++ covers Syntax Highlighting, Tabbed Editing, Plugin System, Regular Expression Search.

Answered from the vendors’ own pages

Swagger UI: Is Swagger UI free?

Yes, open source under the Apache 2.0 licence. SmartBear sells commercial SwaggerHub separately.

Notepad++: Is Notepad++ free?

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

Source
Swagger UI: What is the difference between Swagger and OpenAPI?

OpenAPI is the specification format; Swagger is the toolset around it, including Swagger UI. The specification was renamed from Swagger to OpenAPI in 2016.

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
Swagger UI: Can Swagger UI make real API calls?

Yes, through its try-it-out control, though authentication and CORS configuration often mean it is disabled for production APIs.

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

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

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
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
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