
Cursor
Claude Code
GitHub Copilot
replit
Google Antigravity
Lovable
VS Code
Tomorrow's editor, today. Windsurf Editor is the first AI agent-powered IDE that keeps developers in the flow. Available today on Mac, Windows, and Linux.

W3C Markup Validation Service
Json List
Code Beautify JSON Validator
HTML Validator
Schema Validator
Total Validator
Free HTML, CSS, JSON & XML validator with 12 tools and instant quality scores from 0 to 100.

Which is more popular?
Based on our record, Windsurf Editor seems to be more popular. It has been mentioned 15 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | windsurf.com | validatehtml.com |
| Pricing | — | |
| Company | — | Startup from France · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Windsurf Editor yet.
ValidateHTML is a free suite of 12 web validation tools in one place. Paste code or enter a URL to validate HTML, CSS, JSON, XML, check meta tags, Open Graph data, accessibility, robots.txt, and more. Every validation returns a quality score from 0 to 100 so you know exactly where you stand. No...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Windsurf Editor yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Is Windsurf Editor Better Than Cursor AI?
No ValidateHTML videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Windsurf Editor and ValidateHTML.
ValidateHTML's answer:
12 validation tools in one place with an instant quality score from 0 to 100. No signup, no limits, completely free. Paste code or enter a URL and get results in seconds.
ValidateHTML's answer:
Instead of opening 5 different tabs (W3C for HTML, JSONLint for JSON, separate tools for meta tags, Open Graph, accessibility), ValidateHTML combines everything in one interface. Plus you get a quality score that tells you exactly where you stand.
ValidateHTML's answer:
Web developers, frontend engineers, and SEO specialists who need to validate code quality before deploying. Also useful for freelancers and agencies managing multiple client sites.
ValidateHTML's answer:
I was tired of opening 5 or 6 different tabs every time I needed to validate my code before deploying. W3C for HTML, JSONLint for JSON, random sites for meta tags. So I built one tool that does everything, with a quality score to instantly know where you stand.
ValidateHTML's answer:
Next.js, React, TypeScript, Tailwind CSS, deployed on Vercel.
ValidateHTML's answer:
Independent web developers, Freelance frontend engineers and Small web agencies.
Share your experience with using Windsurf Editor and ValidateHTML. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Windsurf is an agentic code editor, similar to Cursor AI, by autocompleting or generating code, Windsurf understands your entire project before making any suggestions. It can make changes automatically upon request,...
Now, don't get me wrong, both Windsurf and Copilot are solid tools. Copilot is great for quick suggestions across different IDEs, and Windsurf impresses with its polished UI and intuitive workflow. Windsurf's Cascade...
We have no reviews of ValidateHTML yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


So the main change here from 2025 is that I've completely stopped using Continue.dev, Cursor and Windsurf. Ultimately, with the improvements that JetBrains have been making to their IDEs, and with the addition of Junie and fantastic... - Source: dev.to / 5 months ago
Windsurf is an AI-native IDE that uses a Cascade system to maintain context across your codebase and provide live generative assistance. It offers generative autocomplete, live previews of code changes, automatic linter fixes, deep code... - Source: dev.to / 10 months ago
If you're using an IDE like Cursor or Windsurf, you can add a rule to use the DETAILS.md file as the context for the agent. - Source: dev.to / about 1 year ago
Tracking ValidateHTML since Mar 2026.
When comparing Windsurf Editor and ValidateHTML, you can also consider the following products.

The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
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Validates HTML markup of web pages, one at a time.
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Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
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Json List is a lightweight tool for viewing and managing JSON data. Open any local JSON file or load one from a URL, then explore it in a clean, user-friendly list format.
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Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
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Code Beauty’s JSON Validator or JSON Lint is easy to use tool to copy, paste and validate JSON data.
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