Website technology checker & lookup.
Skip manual research. Our platform delivers instant technology profiles with verified contacts and 20-year historical intelligence.
Trusted by some of the biggest companies
Checking website technology made simple.
Better prospect targeting
Find decision-makers fast. Connect stack signals to verified contacts.
Better prospect targeting
Find decision-makers fast. Connect stack signals to verified contacts.
Improved competitive analysis
Track competitor moves. Spot market opportunities first.
Improved competitive analysis
Track competitor moves. Spot market opportunities first.
Increased conversion rates
Target with context. Convert prospects into customers faster.
Increased conversion rates
Target with context. Convert prospects into customers faster.
Cost savings
Eliminate research overhead. Focus resources on qualified leads.
Cost savings
Eliminate research overhead. Focus resources on qualified leads.
Get actionable technology intelligence in 3 simple steps.
Enter domain or keyword
Instant tech stack scan
Enter domain or keyword
Instant tech stack scan
Enter domain or keyword
Instant tech stack scan
Review enriched profile
Verify technology signals
Review enriched profile
Verify technology signals
Review enriched profile
Verify technology signals
Export to CRM
Qualified leads automated.
Export to CRM
Qualified leads automated.
Export to CRM
Qualified leads automated.
Technology Detection
Stack profiles that reveal opportunities.
Multi-signal fingerprinting with headless rendering for accurate technology identification.
Headless JS rendering & asset fingerprinting
Headless JS rendering & asset fingerprinting
Headless JS rendering & asset fingerprinting
HTTP header / DNS / TLS detection
HTTP header / DNS / TLS detection
HTTP header / DNS / TLS detection
Library, framework, platform signatures
Library, framework, platform signatures
Library, framework, platform signatures
Confidence scoring & ambiguity handling
Confidence scoring & ambiguity handling
Confidence scoring & ambiguity handling
Bulk lookups up to 100,000 rows
Bulk lookups up to 100,000 rows
Bulk lookups up to 100,000 rows
CSV/XLSX/API ingestion & export
CSV/XLSX/API ingestion & export
CSV/XLSX/API ingestion & export
Contact Intelligence
Verified contacts that convert better.
Entity resolution connects domains to decision-makers with verified email deliverability.
Firmographics (size, industry, location)
Firmographics (size, industry, location)
Firmographics (size, industry, location)
Role/department targeting
Role/department targeting
Role/department targeting
Role/department targeting
Role/department targeting
Role/department targeting
Social/profile links integration
Social/profile links integration
Social/profile links integration
Traffic markers & engagement signals
Traffic markers & engagement signals
Traffic markers & engagement signals
Intent keywords and stack fit scoring
Intent keywords and stack fit scoring
Intent keywords and stack fit scoring
Historical Intelligence
Built for insight. Scaled for trends.
20-year technology histories reveal adoption patterns and competitive movements.
Timeline view of stack changes
Timeline view of stack changes
Timeline view of stack changes
Cohort and vendor adoption curves
Cohort and vendor adoption curves
Cohort and vendor adoption curves
Competitor stack change diffs
Competitor stack change diffs
Competitor stack change diffs
Market segmentation by technology
Market segmentation by technology
Market segmentation by technology
Historical export (CSV/API)
Historical export (CSV/API)
Historical export (CSV/API)
Custom time windows & cohorts
Custom time windows & cohorts
Custom time windows & cohorts
Alerts & Automation
Intelligence you can act on.
Real-time alerts and CRM automation turn technology signals into revenue opportunities.
Real-time stack change monitoring
Real-time stack change monitoring
Real-time stack change monitoring
One-click detection
One-click detection
One-click detection
Scan any domain instantly
Scan any domain instantly
Scan any domain instantly
Bulk enrichment
Bulk enrichment
Bulk enrichment
Process thousands of leads efficiently
Process thousands of leads efficiently
Process thousands of leads efficiently
24/7 monitoring
24/7 monitoring
24/7 monitoring
One-click detection
Scan any domain instantly
One-click detection
Scan any domain instantly
One-click detection
Scan any domain instantly
Bulk enrichment
Process thousands of leads.
Bulk enrichment
Process thousands of leads.
Bulk enrichment
Process thousands of leads.
24/7 monitoring
Watching for changes.
24/7 monitoring
Watching for changes.
24/7 monitoring
Watching for changes.
Real-time alerts
Know about opportunities.
Real-time alerts
Know about opportunities.
Real-time alerts
Know about opportunities.
Customers see instant results.
"With Technologychecker's 20-year dataset, we discovered that SaaS companies switching from WordPress to headless CMS averaged 78% faster site speeds and 23% better conversion rates—historical context that completely changed our technical positioning"
Shane Murphy
Head of Product Marketing, Webflow
"TechnologyChecker showed us that 73% of our churned customers switched to Workday within 90 days—now we proactively address enterprise migration concerns before renewal."
Luca Rossi
Head of Customer Success - Horilla
"We've completely transformed our ICP targeting with TechnologyChecker's technographic data. Being able to see exactly which tools prospects are using has increased our conversion rates by 40%."
Mert Aktas
Head of Growth, Userguiding
"TechnologyChecker showed us that 73% of our churned customers switched to Workday within 90 days—now we proactively address enterprise migration concerns before renewal."
Luca Rossi
Head of Customer Success - Horilla
"Knowing that BambooHR was capturing 45% of our SMB churn helped us launch a targeted retention program that cut small business churn in half."
Maya Thompson
Head of Growth, PeopleOps Pro
"The historical data is incredible—we can predict which companies are likely to churn based on technology adoption patterns. Our retention campaigns are now data-driven instead of reactive."
Sarah Martinez
Growth Operations Manager, CustomerFlow
"Knowing that BambooHR was capturing 45% of our SMB churn helped us launch a targeted retention program that cut small business churn in half."
Maya Thompson
Head of Growth, PeopleOps Pro
"We used TechnologyChecker.io to analyze 500+ companies that switched from legacy HRIS to modern platforms—the insights shaped our entire go-to-market strategy for enterprise accounts."
Nia Patel
VP of Sales, NextGen Agency
"We've built custom lead scoring models using TechnologyChecker.io's API data. Our MQLs are now 60% more likely to convert because we're scoring based on actual technology fit."
James Wilson
Head of Marketing Operations, DemandFlow
"We used TechnologyChecker.io to analyze 500+ companies that switched from legacy HRIS to modern platforms—the insights shaped our entire go-to-market strategy for enterprise accounts."
Nia Patel
VP of Sales, NextGen Agency
"TechnologyChecker showed us that 73% of our churned customers switched to Workday within 90 days—now we proactively address enterprise migration concerns before renewal."
Luca Rossi
Head of Customer Success - Horilla
"We've completely transformed our ICP targeting with TechnologyChecker's technographic data. Being able to see exactly which tools prospects are using has increased our conversion rates by 40%."
Mert Aktas
Head of Growth, Userguiding
"TechnologyChecker showed us that 73% of our churned customers switched to Workday within 90 days—now we proactively address enterprise migration concerns before renewal."
Luca Rossi
Head of Customer Success - Horilla
"Knowing that BambooHR was capturing 45% of our SMB churn helped us launch a targeted retention program that cut small business churn in half."
Maya Thompson
Head of Growth, PeopleOps Pro
"The historical data is incredible—we can predict which companies are likely to churn based on technology adoption patterns. Our retention campaigns are now data-driven instead of reactive."
Sarah Martinez
Growth Operations Manager, CustomerFlow
"Knowing that BambooHR was capturing 45% of our SMB churn helped us launch a targeted retention program that cut small business churn in half."
Maya Thompson
Head of Growth, PeopleOps Pro
"We used TechnologyChecker.io to analyze 500+ companies that switched from legacy HRIS to modern platforms—the insights shaped our entire go-to-market strategy for enterprise accounts."
Nia Patel
VP of Sales, NextGen Agency
"We've built custom lead scoring models using TechnologyChecker.io's API data. Our MQLs are now 60% more likely to convert because we're scoring based on actual technology fit."
James Wilson
Head of Marketing Operations, DemandFlow
"We used TechnologyChecker.io to analyze 500+ companies that switched from legacy HRIS to modern platforms—the insights shaped our entire go-to-market strategy for enterprise accounts."
Nia Patel
VP of Sales, NextGen Agency
"TechnologyChecker showed us that 73% of our churned customers switched to Workday within 90 days—now we proactively address enterprise migration concerns before renewal."
Luca Rossi
Head of Customer Success - Horilla
"We've completely transformed our ICP targeting with TechnologyChecker's technographic data. Being able to see exactly which tools prospects are using has increased our conversion rates by 40%."
Mert Aktas
Head of Growth, Userguiding
"TechnologyChecker showed us that 73% of our churned customers switched to Workday within 90 days—now we proactively address enterprise migration concerns before renewal."
Luca Rossi
Head of Customer Success - Horilla
"Knowing that BambooHR was capturing 45% of our SMB churn helped us launch a targeted retention program that cut small business churn in half."
Maya Thompson
Head of Growth, PeopleOps Pro
"The historical data is incredible—we can predict which companies are likely to churn based on technology adoption patterns. Our retention campaigns are now data-driven instead of reactive."
Sarah Martinez
Growth Operations Manager, CustomerFlow
"Knowing that BambooHR was capturing 45% of our SMB churn helped us launch a targeted retention program that cut small business churn in half."
Maya Thompson
Head of Growth, PeopleOps Pro
"We used TechnologyChecker.io to analyze 500+ companies that switched from legacy HRIS to modern platforms—the insights shaped our entire go-to-market strategy for enterprise accounts."
Nia Patel
VP of Sales, NextGen Agency
"We've built custom lead scoring models using TechnologyChecker.io's API data. Our MQLs are now 60% more likely to convert because we're scoring based on actual technology fit."
James Wilson
Head of Marketing Operations, DemandFlow
"We used TechnologyChecker.io to analyze 500+ companies that switched from legacy HRIS to modern platforms—the insights shaped our entire go-to-market strategy for enterprise accounts."
Nia Patel
VP of Sales, NextGen Agency
Frequently asked questions.
Frequently asked questions.
What is TechnologyChecker.io?
How does TechnologyChecker work?
What makes TechnologyChecker different from Wappalyzer?
How accurate is your technology detection?
What types of technologies can you detect?
Do you have historical data?
Do you comply with GDPR and privacy regulations?
How can sales teams use TechnologyChecker.io?
What about marketing and growth teams?
Where does your data come from?
What about private or internal tools?
What is TechnologyChecker.io?
How does TechnologyChecker work?
What makes TechnologyChecker different from Wappalyzer?
How accurate is your technology detection?
What types of technologies can you detect?
Do you have historical data?
Do you comply with GDPR and privacy regulations?
How can sales teams use TechnologyChecker.io?
What about marketing and growth teams?
Where does your data come from?
What about private or internal tools?
What is TechnologyChecker.io?
How does TechnologyChecker work?
What makes TechnologyChecker different from Wappalyzer?
How accurate is your technology detection?
What types of technologies can you detect?
Do you have historical data?
Do you comply with GDPR and privacy regulations?
How can sales teams use TechnologyChecker.io?
What about marketing and growth teams?
Where does your data come from?
What about private or internal tools?
Turn tech stack into revenue.
Start detecting technology stacks instantly—verified contacts included. Free trial, no commitment.
Get Started
Turn tech stack into revenue.
Start detecting technology stacks instantly—verified contacts included. Free trial, no commitment.
Get Started
Turn tech stack into revenue.
Start detecting technology stacks instantly—verified contacts included. Free trial, no commitment.
Get Started