Wappalyzer
Depends
Confidence: Medium
Buy if your GTM team targets prospects by tech stack weekly and will actually use the lists or APIs.
Comparison
Wappalyzer vs TheirStack.com
Wappalyzer and TheirStack.com both land on Depends.
TheirStack.com
Depends
Confidence: Medium
Buy if your sales or recruiting team prospects by tech stack or hiring signals . the data coverage is real and reviewers rate it highly.
| Compare | Wappalyzer | TheirStack.com |
|---|---|---|
| Verdict | Depends | Depends |
| Best for | SaaS sales teams selling into specific tech stacks | B2B sales teams selling into specific tech stacks |
| Who it's not for | Small teams that just need a simple contact list | Small teams that just need a contact list . use a CRM or spreadsheet |
| Privacy | One disclosed breach in 2020; no newer incidents found in sources reviewed.⁶ | No known public vulnerabilities found in the sources reviewed. |
| Support quality | No support evidence found | No support evidence in sources |
| Public sentiment | G2 users rate Wappalyzer 4.7/5 and praise its easy tech detection, while some Reddit users gripe about pricing and noisy results. | G2 reviewers praise ease of use and data accuracy, but the verified review base is tiny.12 |
| Biggest gotcha | Pricing called "a mess" by third-party reviewers . audit plan limits before committing.² | Credit-based: searches and enrichments burn credits; heavy use adds up fast.15 |
Pick Wappalyzer when
- SaaS sales teams selling into specific tech stacks
- Competitive intel on rival installs
- CRM enrichment for tech-led outreach
- Developers auditing site stacks
When Wappalyzer is not a fit
- Small teams that just need a simple contact list
- Buyers who hate confusing pricing tiers
- Anyone wanting occasional free lookups . extensions cover that
Pick TheirStack.com when
- B2B sales teams selling into specific tech stacks
- Recruiters sourcing candidates via job postings
- GTM teams using hiring signals as intent data
- API-first data users
When TheirStack.com is not a fit
- Small teams that just need a contact list . use a CRM or spreadsheet
- Guess: teams needing verified emails/dials . it finds companies, not people
- Risk-averse enterprises wanting a proven vendor . only 10 G2 reviews exist
- Non-technical teams wanting plug-and-play CRM data with no setup
Sources
review
review
- Wappalyzer Pricing Plans, Costs & What You Get in 2026derrick-app.comreview
- Plans & pricingwappalyzer.comofficial
- Wappalyzer - Technology profiler - Chrome Web Storechromewebstore.google.comofficial
news
security
review
- Wappalyzer generates $18M in revenuegetlatka.comnews
- Pricing | TheirStack.comtheirstack.comofficial
- Job Postings API | TheirStack.comtheirstack.comofficial
- TheirStack Review & API Analysis | GTM Toolsgtmtools.devreview
review