Leadspace vs TheirStack

Leadspace provides real-time B2B data intelligence to help organizations identify buyers, prioritize opportunities, and execute go-to-market strategies. It combines CRM, marketing automation, product data, or data lakes with more than 30 embedded third-party B2B data sources. The platform creates unified company and contact profiles that can include buying centers, technographics, intent, and firmographics. AI captures firmographic, technographic, behavioral, and intent signals, then uses models to score fit and intent and prioritize leads. Enriched intelligence can be sent to CRMs, marketing automation platforms, data warehouses, ad platforms, and other go-to-market tools; named destinations include Salesforce, Marketo, HubSpot, Eloqua, Snowflake, and BigQuery. Leadspace is available through web, API, and extension access, with real-time profiles, identity resolution, audience activation, and data ingestion. Its listed security measures include encrypted storage and transfer, role-based access control, multi-layer authentication, and continuous vulnerability monitoring. Leadspace states compliance coverage for GDPR, CCPA, and SOC 2 Type II. Starter is free and includes one seat, 25 credits per day, and 100 exports per month. Solo costs $49 a month and Pro $89 a month, both billed annually, with one seat each. Enterprise pricing is custom.

TheirStack helps sales and marketing teams find companies that may need what they sell, using job postings as clues to company needs. Users can search companies by technology use across a catalog of more than 33,000 technologies, or filter job postings for keywords tied to their software’s use cases. The job-postings API covers 250 million jobs across 195 countries since 2021 and searches 362,000 other websites alongside named job boards.

The web app includes job and company search, company lookup, list enrichment, CSV or Excel exports, and daily or weekly email alerts. API plans add job search, company search, technographics and buying-intent endpoints, webhooks, and an MCP server for AI assistants. Integrations include Zapier, Make, N8N, Airtable, and contact-finding services such as Apollo, ContactOut, Instantly, and LinkedIn. TheirStack does not provide personal contact data directly, but connects to third-party providers and shows hiring-manager information for applicable jobs. Company exports are capped at 200 jobs per company; full job history is available through the Job Search API, webhooks, or MCP server. Free is available; API starts at $49 a month.