SpyFu vs Builtwith: Which is Better in 2026?
Choosing between SpyFu and Builtwith comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
SpyFu
Competitor SEO and PPC research
Best for you if:
- • You need SEO tools features specifically
- • SpyFu is an SEO and PPC research tool for competitive analysis
- • It reveals competitor keywords, ads, and rankings history
Builtwith
See the tech stack behind any website
Best for you if:
- • You want to try before committing
- • You need web analytics features specifically
- • BuiltWith is a website profiling tool that reveals technology stacks behind any site
- • It identifies CMSs, analytics, e-commerce platforms, and marketing tools
| At a Glance |  SpyFu |  Builtwith |
|---|---|---|
Starts at | $29/monthBasic | FreeFree tier available |
Best For | SEO Tools | Web Analytics |
Rating | 4.6/5 | 4.3/5 |
Choose SpyFu or Builtwith?
Choose SpyFu if
Competitor SEO and PPC research
- Competitor SEO analysis
- Good keyword research
- Fair pricing
- Budget matters ($29/month vs Free)
- Your work is SEO tools-shaped, not web analytics-shaped
Choose Builtwith if
See the tech stack behind any website
- Technology lookup
- Good for sales
- Browser extension
- Your work is web analytics-shaped, not SEO tools-shaped
| Feature | SpyFu | Builtwith |
|---|---|---|
| Pricing Model | Paid | Freemium |
| User Rating | ★4.6/5 663 reviews | ★4.3/5 61 reviews |
| Categories | SEO ToolsMarketing | Web AnalyticsCompetitive Intelligence |
In-Depth Analysis
SpyFu
Competitor SEO and PPC research
Strengths
- +Competitor SEO analysis
- +Good keyword research
- +Fair pricing
- +Active development
- +Historical data
Weaknesses
- -Less data than Ahrefs
- -UI dated
- -Learning curve
- -Data accuracy varies
- -Better alternatives exist
Key features
Builtwith
See the tech stack behind any website
Strengths
- +Technology lookup
- +Good for sales
- +Browser extension
- +Active development
- +Good data
Weaknesses
- -Expensive
- -Credit-based
- -Limited free tier
- -Better alternatives exist
- -Privacy concerns
Key features
Pricing: SpyFu vs Builtwith
| Plan | SpyFu | Builtwith |
|---|---|---|
| Tier 1 | $29 month Basic | Free Free |
| Tier 2 | $89 month Pro + AI | $295 month Basic |
| Tier 3 | $187 month Team/Agency | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on SpyFu pricing and Builtwith pricing.
Who Should Use What?
On a budget?
Builtwith has a free tier. SpyFu is paid only.
Go with: Builtwith
Want the highest-rated option?
SpyFu: 4.6/5 (663 reviews). Builtwith: 4.3/5 (61 reviews).
Go with: SpyFu
Value user reviews?
SpyFu: 663 reviews (4.6/5). Builtwith: 61 reviews (4.3/5).
Go with: SpyFu
3 Questions to Help You Decide
What's your budget?
SpyFu is paid. Builtwith is freemium. Builtwith lets you start free.
What's your use case?
SpyFu is a SEO tools tool. Builtwith is in web analytics. Pick the category that matches your needs.
How important are ratings?
SpyFu is rated higher: 4.6/5 vs 4.3/5.
Key Takeaways
SpyFu
- Higher user rating: 4.6/5 vs 4.3/5
- Larger review base (663 reviews)
- Our pick for this comparison
Builtwith
- Has a free tier
- Better fit for web analytics
The Bottom Line
SpyFu is our pick. Builtwith has a free tier if you want to test without paying.
Frequently Asked Questions
Is SpyFu or Builtwith better?
SpyFu is rated in our evaluation. SpyFu is paid and Builtwith is freemium.
What are SpyFu and Builtwith used for?
SpyFu: Competitor SEO and PPC research. Builtwith: See the tech stack behind any website.
What does SpyFu cost vs Builtwith?
SpyFu is a paid tool. Builtwith is freemium (free tier + paid plans). Visit their websites for detailed pricing.