TheirStack API alternatives
TheirStack API pricing (for reference)
| Published paid plans | Free | Source, checked |
|---|---|---|
| $49/mo = 1,500 API credits (about 500 companies' tech stacks); $100/mo = 5,000; $169/mo = 10,000 | sign-up credits | theirstack.com, 2026-10-01 |
Alternatives to TheirStack API
What buyers compare on: per domain checked (buyers compare $ per 1,000 lookups and the entry plan).
| Option | Published paid plans | Free | Source, checked |
|---|---|---|---|
| DomainDNA API (CyberMax) | DomainDNA API Pay as you go: 1,000 domain checks (no expiry): $5 once DomainDNA API Scout: 5,000 domain checks a month: $19/month DomainDNA API Analyst: 15,000 domain checks a month: $49/month DomainDNA API Platform: 40,000 domain checks a month: $99/month | free 25 domains/day | CyberMax store, live |
| HireHeat API (CyberMax) | HireHeat API Pay as you go: 500 company checks (no expiry): $5 once HireHeat API Scout: 2,500 company checks a month: $19/month HireHeat API Team: 8,000 company checks a month: $49/month HireHeat API Scale: 20,000 company checks a month: $99/month | free 20 companies/day | CyberMax store, live |
| Wappalyzer | Pro $250/mo (5,000 API credits); Business $450/mo (20,000); Enterprise $850+/mo | limited free plan | www.wappalyzer.com, 2026-10-01 |
| BuiltWith | Basic $295/mo; Pro $495/mo; Team $995/mo | free single lookups on the website | builtwith.com, 2026-10-01 |
| host.io | Basic $99/mo = 10,000 requests (+$10 per extra 1,000); Business $499/mo = 100,000; Enterprise $999+/mo | trial | host.io, 2026-10-01 |
| PredictLeads | $40 minimum monthly charge at $0.04 per credit (101-5,000); $0.02 (5,001-10,000); $0.01 (10,001-100,000); 1 credit per result | 100 API credits/month | predictleads.com, 2026-10-01 |
| Coresignal | Mini $49/mo = 2,500 credits; Starter $199/mo; Pro $499/mo; Growth $1,000/mo | 7-day trial | coresignal.com, 2026-10-01 |
Get DomainDNA API Scout: 5,000 domain checks a month: $19/monthTry itAll plans
How to choose
- Price the unit you actually use (per domain checked (buyers compare $ per 1,000 lookups and the entry plan)), not the headline plan.
- Check what the free tier allows before paying: several options above list one.
- Test on your own data; switch costs are usually the data format and integrations, not the price.
Head to head: DomainDNA API vs TheirStack API · HireHeat API vs TheirStack API
Cite this page: CyberMax, "TheirStack API alternatives: 7 options with published prices (2026-10-01)", https://cybermaxtools.com/alternatives/theirstack-api/ (prices checked 2026-10-01). Each rival price is quoted from the source linked next to it, on the date shown.
TheirStack API and the other names here are trademarks of their owners, used only to compare published prices.