
Track Company Technology Stack Changes
Stack Radar monitors millions of websites and shows when companies add, remove, or switch tools. Spot trends, build smarter lead lists, and stay ahead of change in Martech, SaaS, Analytics, CRM, and more.








Millions of
Tracked Companies
Tracked Technologies
1500+
Easily filter by:
We are
scanning for over
1500 Technologies
across categories
including
Analytics
Advertising
Payments
CDN & Performance
Email & SMS
Reviews
Personalization & A/B Testing
Fraud Protection
Ecommerce Platforms
CMS's
Loyalty & Referrals
Surveys & Forms
Chat
Optimization & Tracking


Built for marketers, sales teams, and tech providers needing accurate, timely tech stack insights.
Stay Ahead of the Curve
Tell us which technologies matter to you, and we’ll alert you the moment they’re added or removed from a website. You’ll know exactly when to reach out—armed with the right insights at the perfect time.





Perfect for Digital Agencies & Tech Providers
Stop guessing which companies need your services. Our platform continuously monitors the tech stacks of websites actively investing in tools, platforms and services.

Why Digital Agencies
& Tech Sellers love us
We send you alerts when a URL adds or removes the technologies you are interested in.
We track millions of actively spending websites
We have smart filters, lead lists and an active notification system
We track companies from over 86 countries














As an agency who specialises in Paid Media we have set alerts on Google and Meta Ads so we know when companies are beginning their advertising journey. We then reach out with our expertise at the right time! It’s perfect!
Grow Social Digital




Stack Radar is our New Business team! We set alerts we want based on our success with clients. We also filter by industry and Technology to identify perfect targets. It works for us!
Fly High Digital




Stack Radar is the prefect tool to find opportunities suited to our strengths. We have closed numerous deals from being alerted that a company has started working with the Technology we specialise in!
Pulse Media



Get notified when technologies change
Be the first to know when a prospect changes or drops a key technology- your perfect timing to step in.




How does it work?


🔍 Find companies you're interested in


Use our extensive search & filters to find what you're looking for.
➕ Search Technologies your interested in




🔔 Receive notifications when companies change technologies
Get emails sent to you when a company changes tech stacks.


Then do it
all over again.






Don't take too long. Technologies are changing right now.
There's no better time to identify which companies need your services. Whilst you've been reading this, we've already identified technology changes...
Blogs & Articles


Know who’s using what, and when it changes
Start tracking technologies on millions of websites today.

