RGBlind.com
ColorBlind-Test.io
ColorBlindTest.us
Sight-Check
Venngage WCAG Color Contrast Checker
Visual Field Test
Free online Ishihara color blindness screening test in 13 languages. Instant severity result, downloadable PDF report, and an embeddable widget. No sign-up, no email. Screens for red-green color vision deficiency, not a medical diagnosis.

Sublime Text
VS Code
Notepad++
GNU Emacs
Microsoft Visual Studio
Netbeans
IntelliJ IDEA
Highly configurable text editor built to enable efficient text editing

Which is more popular?
Based on our record, Vim seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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Ishihara Test
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| Website | ishiharatest.com | vim.org |
| Pricing | ||
| Company | Startup from Slovakia | — |
| Listed in |
In their own words, as submitted to SaaSHub.

IshiharaTest.com is a free, no-sign-up online Ishihara color blindness screening test. Based on the classic Ishihara plate method, it gives a fast, private indication of whether you may have a red-green color vision deficiency, along with a difficulty breakdown and a downloadable PDF report. It...
No description of Vim yet.
What each product offers, as listed by its team.

No features have been listed yet.
Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Vim is recommended for programmers, developers, and system administrators who require a highly efficient and customizable text editing experience. It is especially useful for those who work extensively in terminal environments or need a quick, resource-light text editor for remote systems.
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What Vim Is and Why You Should Learn It
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Ishihara Test and Vim. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

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Vim offers a variety of features like split windows, macros, and extensive customization options. It has a steep learning curve, but once you master it, you’ll be amazed at the speed and productivity it brings to your...
It’s tough to say which developers would enjoy Vim as a text editor. It’s an old system with an outdated interface. Yet, it still has the charm and powerful feature-set that the average developer needs. I would...
The entire installation process is perfectly documented on their Sourceforge page, which you must definitely pay a visit. There is another standalone Vim software, known as the gVim that brings a GUI-based interface...
Recommendations tracked on public social media and blogs since March 2021.

Tracking Ishihara Test since Apr 2026.
Lua is quite small, encouraging distros to include it. The ubuntu gvim has, and the gvim AppImage linked from vim.org does. The default Makefile from github is set up to not include it, but you can uncomment one line there to get it. Source: over 3 years ago
I've not used vimwiki locally (tho I'm old enough to remember the Vim wiki on vim.org :), but I think what you are wanting to do is extend vimwiki's syntax file. I presume it installs one at $VIMRUNTIM/syntax or or ~/.vim/syntax. If... Source: almost 4 years ago
Vim.org has 242k total visitors, tailwindcss.com has 4.4m, planetscale.com has 412k, jpl.nasa.gov has 2.6m, all built with Tailwind, all several years younger than Vim's website. Unnecessary comparison, unnecessary defence. It's a... Source: almost 4 years ago
When comparing Ishihara Test and Vim, you can also consider the following products.

Free color accessibility toolkit with color blindness simulators, WCAG contrast checker, and accessible palette generator for designers and developers.
Compare RGBlind.com to Ishihara Test or Vim:

Sublime Text is a sophisticated text editor for code, html and prose - any kind of text file. You'll love the slick user interface and extraordinary features. Fully customizable with macros, and syntax highlighting for most major languages.
Compare Sublime Text to Ishihara Test or Vim:

The Color Blind Test is an optical test that is designed to determine a person’s type of color blindness and identify whether or not they have a color deficiency.
Compare ColorBlind-Test.io to Ishihara Test or Vim:

Build and debug modern web and cloud applications, by Microsoft
Compare VS Code to Ishihara Test or Vim:

A digitalized color blind test for adults and kids. This tool provides accurate results as it follows all clinical procedures. Taking a test here will save you time and money as you do not need to visit a doctor.
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A free source code editor which supports several programming languages running under the MS Windows environment.
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