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.
Comparison
TheirStack.com vs 6sense
TheirStack.com and 6sense both land on Depends.
6sense
Depends
Confidence: Medium
Buy only if you're a mid-market or enterprise B2B team with dedicated marketing ops and a six-figure ABM budget.
| Compare | TheirStack.com | 6sense |
|---|---|---|
| Verdict | Depends | Depends |
| Best for | B2B sales teams selling into specific tech stacks | Enterprise B2B marketing teams |
| Who it's not for | Small teams that just need a contact list . use a CRM or spreadsheet | Startups and small teams . cost and ramp time dwarf value |
| Privacy | No known public vulnerabilities found in the sources reviewed.10 | Formal program looks solid . trust center, ISO/IEC 42001, HackerOne VDP, GDPR/CCPA validation . but independent researchers have publicly flagged tracking-script concerns 6sense says it addressed. |
| Support quality | No support evidence in sources | No direct support evidence found |
| Public sentiment | G2 reviewers praise ease of use and data accuracy, but the verified review base is tiny.² | Users praise 6sense's account identification but consistently flag high cost, a steep learning curve, and opaque intent data.14 |
| Biggest gotcha | Credit-based: searches and enrichments burn credits; heavy use adds up fast.⁵ | Opaque pricing; reported entry near $40K/yr, climbs with seats and data volume |
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
Pick 6sense when
- Enterprise B2B marketing teams
- Mature ABM programs with big budgets
- Long, complex sales cycles needing intent data
When 6sense is not a fit
- Startups and small teams . cost and ramp time dwarf value
- Anyone needing transparent, self-serve pricing
- Companies without dedicated marketing ops staff
- Teams that just need a simple lead list
Sources
review
- Pricing | TheirStack.comtheirstack.comofficial
- Job Postings API | TheirStack.comtheirstack.comofficial
- TheirStack Review & API Analysis | GTM Toolsgtmtools.devreview
review
review
- Coresignal Alternative - TheirStacktheirstack.comofficial
review
- theirstack.com Review - FlareScore: 92/100scamflare.comsecurity
- theirstack.com Reviews | Scamadviserscamadviser.comsecurity
- theirstack.com Reviews: Scam Detector (39.4)scam-detector.comsecurity
- theirstack.com Competitors - Similarwebsimilarweb.comnews
review
- Read Customer Service Reviews of 6sense.com . Trustpilottrustpilot.comreview