Wappalyzer and TheirStack are both valuable tools in the realm of technology profiling and business intelligence, but they serve different purposes. Wappalyzer focuses on identifying the technologies used by websites, while TheirStack provides comprehensive technographic data and real-time technology usage tracking.
Quick Decision Guide
Choose TheirStack if
- ✓You need to know which companies are using internal tools like CRMs, ERPs, databases, programming languages, etc.
- ✓You want real-time notifications when companies adopt new technologies
- ✓You're looking for technographic data to power your sales and marketing efforts
Choose Wappalyzer if
- ✓You need to identify the technology stack of specific websites
- ✓You want to monitor changes in website technologies
- ✓You're interested in browser-based technology profiling
Feature comparison
Focus & Data
| Feature | TheirStack | Wappalyzer |
|---|---|---|
| Primary Focus | Technographic data and technology usage tracking | Website technology profiling |
| Data Sources | Job postings and hiring platforms | Browser extension, in-house crawlers |
| Data Types | Technology usage, company information | Website technology stack, company details, contacts, traffic and tech-spend bands |
Features
| Feature | TheirStack | Wappalyzer |
|---|---|---|
| Real-time Updates | Yes, through webhooks | Yes, through browser extension |
| Confidence Scoring | ✓Yes, based on job posting frequency and context | No |
| Webhook Support | ✓Yes, real-time notifications | No (async callbacks for lookups and lists only) |
API & Integration
| Feature | TheirStack | Wappalyzer |
|---|---|---|
| Filtering Capabilities | Company country, industry, size, technologies and job-posting attributes | Technologies (up to 50), industry, size, traffic, country and language |
| MCP Server | Yes, remote with OAuth | Yes, hosted with OAuth (Business plan) |
| Native CRM Integrations | HubSpot import in beta; CRM sync through Zapier, Make or n8n | ✓Salesforce, HubSpot and Pipedrive (Business plan) |
Pricing
| Feature | TheirStack | Wappalyzer |
|---|---|---|
| Pricing Model | Based on number of companies returned | Tiered pricing model |
What is Wappalyzer?
Wappalyzer is a browser extension that identifies the technologies used by websites. It offers a range of tools and data to help businesses understand their online presence and competitors.
Data sources
TheirStack gathers data from job postings, collecting job listings from millions of companies by monitoring company websites, job boards, and other hiring platforms. This approach allows for a broader understanding of technology usage beyond just web technologies. Wappalyzer, on the other hand, uses a browser extension and in-house crawlers to identify technologies used on websites, providing instant results and detailed technology profiles.
Pricing
TheirStack's pricing model is based on the number of companies returned in your search, making it scalable for businesses of all sizes. Wappalyzer offers a tiered pricing model with options for individuals and businesses, providing a greater number of technology lookups at each plan tier.

