TheirStack provides technology and hiring signals to find companies using 32K+ technologies and uncover ready-to-buy customers through job posting analysis. It boosts lead qualification, increases response rates, and accelerates sales with precise targeting.
TheirStack is a data platform built for sales and marketing teams that need to find and qualify leads based on technology usage and hiring activity. It tracks over 55,000 technologies across 21,000 companies and analyzes 207 million job postings from 195+ countries. The tool is designed to surface companies that are actively hiring for roles or using tech stacks that signal a need for your product, making it a strong fit for outbound teams that want to move beyond basic firmographic targeting.
The platform's core strength lies in combining technographic and hiring signals into one searchable database. Users can filter companies by specific technologies (programming languages, CRMs, ERPs, SaaS tools) or by job posting content -- including job titles, keywords, salary ranges, and hiring volumes. This dual approach helps identify companies that are not only using relevant tech but also investing in teams that would use your solution. The buying intent keyword filter lets you search job descriptions for phrases like "invoice management" or "A/B testing" to find companies with explicit pain points.
Pricing is credit-based and pay-as-you-go, with no recurring subscription required. A free plan offers 50 credits to test the platform. Paid plans start at $109 for 1,000 credits (about $0.109 per company) and scale down to $0.042 per credit at the 50,000-credit tier ($2,078). Credits are one-time purchases that never expire, and exports are included at all paid levels. This model works well for teams that need occasional data pulls, but heavy users may find the per-credit cost adds up compared to flat-rate alternatives.
TheirStack is best for SMBs, mid-market, and enterprise sales teams that want to enrich their CRM with technographic and hiring data. It's particularly effective for companies selling developer tools, HR software, marketing platforms, or any product that solves a problem visible in job postings. The tool integrates via API and exports, so it slots into existing workflows without replacing your CRM or outreach platform. Setup is intermediate -- you can start searching within minutes after signing up and configuring filters.
User feedback is strong: customers report a 35% reduction in research time, 3x higher response rates, 60% more meetings booked, and 2x improvement in win rates. Testimonials from Stacker, 6nomads, and Graphext highlight the precision of targeting and the ability to write highly personalized outreach based on real-time signals. The main drawbacks are the credit-based pricing, which can become expensive for large-scale prospecting, and the lack of built-in CRM or campaign management features -- you'll need to export data to your own tools.
Overall, TheirStack is a focused, effective lead intelligence tool that excels at uncovering ready-to-buy companies through technology and hiring signals. If your go-to-market strategy relies on identifying prospects with specific tech stacks or hiring patterns, it's a solid addition to your stack. The free plan makes it easy to evaluate, and the pay-as-you-go credits give you flexibility without long-term commitment.
Features
- Technology usage filters
- Hiring signals alerts
- Buying intent keywords
- Company details discovery
- Job postings analysis
- Data API access
- Instant alerts for new job openings
- Technographic signals
Pricing
Pros
- Reduces research time by 35%
- Increases response rates by 3x
- Boosts meetings booked by 60%
- Improves win rates by 2x
- Comprehensive technographic and hiring signal data
Cons
- Credit-based pricing can be costly for large-scale use
- No standalone CRM or campaign management features
Best For
Sales and marketing teams targeting companies based on technology usage and hiring signals, especially for identifying ready-to-buy customers.