How to Find Websites Using Any Technology: The Complete 2026 Guide

If you’ve ever wondered how to find all the companies using a specific technology—whether it’s WordPress, Shopify, HubSpot, or any other software—you’re not alone. This is one of the most powerful yet underutilized strategies in B2B sales and marketing.

In this comprehensive guide, I’ll walk you through everything you need to know about finding websites by their technology stack. We’ll cover why this matters, the different methods available, and how to turn this data into actionable leads for your business.

Why Finding Websites by Technology Actually Matters

Before we dive into the how, let’s talk about the why. Understanding what technology a company uses tells you a lot more than you might think.

For Sales Teams: It’s About Qualification, Not Just Quantity

Think about it this way: if you sell a Shopify app, wouldn’t you rather have a list of 10,000 Shopify stores than a random list of 100,000 websites? The technology a company uses is often a stronger buying signal than their industry or company size.

Here’s what technology data actually reveals:

• Budget signals: A company using Salesforce Enterprise has a different budget than one using a free CRM. Their technology choices tell you what they’re willing to invest.
• Technical sophistication: Companies using modern tech stacks (React, Kubernetes, etc.) often have technical teams that understand and value good tooling.
• Integration opportunities: If you know a prospect uses HubSpot and Slack, you can pitch your integration story rather than starting from scratch.
• Competitor displacement: Finding companies using your competitor’s product gives you a warm list of prospects who already understand the problem you solve.

For Marketers: Better Targeting, Better Results

Generic audience targeting is expensive and inefficient. When you can target by technology stack, your ad spend goes further because you’re reaching people who are genuinely more likely to need your product.

Technology-based marketing enables:

• Hyper-targeted advertising campaigns
• Personalized content that speaks to specific tech stacks
• Account-based marketing with technology as a key criteria
• More accurate market sizing and competitive analysis

Method 1: Browser Extensions (Good for Individual Lookups)

The simplest way to check what technology a single website uses is with a browser extension. These are free tools that analyze the current page and show you what technologies are detected.

Popular Options Include:

Wappalyzer – One of the most well-known options. The free version lets you check individual sites while browsing. It detects a wide range of technologies including CMS platforms, analytics tools, and JavaScript frameworks.

BuiltWith – Similar functionality with a browser extension that shows tech stack information. The free tier is limited but useful for occasional lookups.

TechLeads.fyi Chrome Extension – Offers unlimited free lookups while browsing, plus the ability to quickly add companies to lead lists if you have an account.

The Limitation of Browser Extensions

Here’s the thing—browser extensions are great for checking one website at a time. If a prospect sends you their website before a call, you can quickly see what they’re using. But if you need to find all companies using a specific technology? Browser extensions can’t help with that.

You’d have to manually visit thousands of websites one by one, which isn’t practical for serious prospecting.

Method 2: Technology Lookup Databases (The Scalable Approach)

For bulk research—finding hundreds or thousands of companies using specific technologies—you need a technology database. These platforms crawl millions of websites, detect their technologies, and let you search and filter the results.

What to Look For in a Technology Database

Not all technology databases are created equal. Here’s what matters:

• Database size: More indexed websites means better coverage. Look for platforms with 100M+ websites minimum, though 400M+ is ideal.
• Technology coverage: How many different technologies can the platform detect? The range should include CMS platforms, analytics tools, e-commerce systems, marketing automation, CRMs, hosting providers, and development frameworks.
• Data freshness: Technology changes fast. A database that only updates monthly might show you companies that have already migrated away from a platform.
• Filtering capabilities: Can you filter by country, industry, traffic, or combine multiple technologies? Good filtering turns raw data into qualified leads.
• Export options: How do you get the data out? CSV export is standard, but some platforms also offer API access or direct CRM integrations.

How TechLeads.fyi Approaches This

At TechLeads.fyi, we’ve built a database of over 450 million websites with detection for 3,600+ technologies. The data is refreshed regularly with staleness indicators so you know how recent each detection is.

But what really sets it apart for B2B use cases is the lead generation functionality. You don’t just get a list of domains—you get company information, and with the enrichment feature, decision-maker contact details.

Method 3: Step-by-Step Tutorial (Finding Leads by Technology)

Let me walk you through exactly how to find companies using any technology. I’ll use TechLeads.fyi for this example, but the general approach applies to most technology lookup tools.

Step 1: Define What You’re Looking For

Before you search, get clear on your target. Ask yourself:

• What specific technology do I want to target?
• Am I looking for users of a competitor product?
• Do I need companies using a technology my product integrates with?
• What geographic regions matter for my business?

For this example, let’s say you sell a marketing analytics tool that integrates with Shopify, and you want to find Shopify stores in the United States that have significant traffic.

Step 2: Run Your Initial Search

Go to your technology lookup tool and search for your target technology. In our case, search for “Shopify.”

The initial results will likely show millions of websites. That’s too many to work with effectively, so we need to narrow it down.

Step 3: Apply Strategic Filters

This is where the magic happens. Good filtering transforms a massive dataset into a targeted lead list.

Apply these filters progressively:

• Geography: Filter to United States (or your target region)
• Traffic: Set a minimum traffic threshold to focus on established businesses
• Additional technologies: Consider filtering for Shopify stores that also use specific payment processors or marketing tools

Each filter reduces your list size but increases the quality. A list of 5,000 highly qualified prospects is worth more than 500,000 random websites.

Step 4: Review and Refine

Before exporting, scroll through a sample of the results. Do these look like your ideal customers? If not, adjust your filters.

Common refinements:

• Exclude certain industries that aren’t a good fit
• Add technology combinations (e.g., Shopify + Klaviyo for email-focused stores)
• Adjust traffic thresholds up or down

Step 5: Export and Enrich

Once you’re happy with your list, export it. Most platforms offer CSV download.

If your platform supports enrichment (like TechLeads.fyi does), you can add decision-maker contact information—emails, phone numbers, LinkedIn profiles—directly to your export. This saves the step of manually researching each company.

Comparing Your Options: What Should You Use?

Here’s an honest comparison of the main options for finding websites by technology:

BuiltWith

• Strengths: Large database, historical data available, established reputation
• Weaknesses: Expensive ($295-495/month), interface can be complex, limited lead gen features
• Best for: Enterprise teams with large budgets who need historical technology tracking

Wappalyzer

• Strengths: Great browser extension, developer-friendly, open source technology definitions
• Weaknesses: Smaller database, limited bulk search capabilities, expensive Pro plans ($250-450/month)
• Best for: Developers and technical users who primarily need individual lookups

TechLeads.fyi

• Strengths: Largest database (450M+ sites), affordable pricing ($79/month Pro), built-in lead generation and enrichment, daily data refreshes
• Weaknesses: Newer platform, no historical data tracking yet
• Best for: Sales and marketing teams focused on lead generation, SMBs and startups who need enterprise-level data at reasonable prices

Advanced Strategies: Getting More From Technology Data

Once you’ve mastered the basics, here are some advanced strategies to extract even more value:

Technology Combination Searches

Instead of searching for a single technology, combine multiple technologies to find specific profiles. For example:

• Shopify + Klaviyo = E-commerce stores with sophisticated email marketing
• WordPress + WooCommerce + Stripe = E-commerce on WordPress with modern payments
• HubSpot + Salesforce = Companies using both for marketing and sales

Competitive Displacement Campaigns

One of the highest-value uses of technology data is finding companies using your competitor’s product. These prospects already understand the problem space—your job is to show them a better solution.

When reaching out, don’t trash the competitor. Instead, focus on what makes your solution different and better for their specific needs.

Technology Trigger Events

Pay attention to technology changes. A company that recently adopted a new technology is often in “buying mode” for related tools. If you can identify companies that just implemented HubSpot, for example, they might be receptive to HubSpot integrations.

Common Mistakes to Avoid

After seeing thousands of users work with technology data, here are the most common mistakes:

1. Over-filtering too early: Start broad and narrow down. If you over-filter on your first search, you might miss good prospects.
2. Ignoring data freshness: Technology changes. A company listed as using WordPress might have migrated to Webflow six months ago. Look for platforms that show when data was last verified.
3. Not enriching contacts: A list of domains is just the start. For actual outreach, you need contacts. Use enrichment features or you’ll spend hours manually researching.
4. Generic outreach: If you found someone because they use Shopify, mention that! “I noticed you’re running your store on Shopify…” is much better than a generic cold email.

Getting Started: Your Next Steps

Finding websites by technology is one of the most powerful tools available for B2B sales and marketing. Here’s how to get started:

1. Define your target technology: What technology indicates a good prospect for your business?
2. Choose your tool: For occasional lookups, browser extensions work. For lead generation, you need a database like TechLeads.fyi.
3. Run your first search: Start with your target technology and see what the data looks like.
4. Apply filters strategically: Narrow down to your ideal customer profile.
5. Export and enrich: Get the contact data you need for outreach.
6. Personalize your outreach: Reference the technology in your messaging.

Technology data turns cold outreach into warm outreach. When you know what tools a company uses, you can speak their language and address their specific needs.

Ready to try it yourself? Start your free search at TechLeads.fyi and see what technology data can do for your prospecting.