StackWho review
A focused web tool for technology-filtered company and contact discovery.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
StackWho is a technographic data platform for sales teams, recruiters, investors, and researchers. It helps users find companies by technology, industry, location, and size, inspect full technology stack profiles, identify decision makers, and export company and contact data to CSV. The platform covers companies globally and says it detects technologies from public-facing websites and related public sources. Its web-based workflow is suited to teams that need technology-filtered prospecting and research rather than a broad multi-channel data environment.
The Free plan costs $0 per month and includes company profile browsing, full technology stack views, filters for industry, location, and size, masked contact emails, and 10 pages of search results. It does not include CSV exports. The Pro plan costs $79 per month on monthly billing and adds full contact details, decision-maker contacts, unlimited search result pages, unlimited CSV exports, saved searches, and custom lists. Paid plans also provide verified contact details, while the published product details describe weekly technology and company-data refreshes. This structure makes the free tier useful for exploration, with Pro aimed at recurring prospecting and list-building workflows.
StackWho connects with HubSpot, Salesforce, Outreach, and Apollo, giving teams paths into common sales and outreach workflows. Its main strength is depth around technology-based company discovery: users can combine technology filters with company attributes, review stack profiles, find decision makers, and organize results into saved searches or custom lists. The tradeoff is focus. The product is web-only and centers on current discovery, contact data, and exports; teams seeking a verified API, historical technology data, intent signals, or monthly credits should consider another option. Choose StackWho for technology-led research and prospecting; look elsewhere when broader data history or programmatic access is essential.
StackWho pros and cons
- Where it wins
- Search by technology, industry, location, and company size
- Decision-maker contacts with verified emails on paid plans
- Weekly refreshes, CSV exports, and CRM integrations
- Where it doesn't
- Web-only platform
- Free plan masks contact emails
- Paid plans start at $79 per month
StackWho fact sheet, pricing and score →
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