DiscoverOrg uses Rollup Helper.

DiscoverOrg provides the world's most in-depth sales intelligence on the IT, Marketing and Finance Departments of Fortune Ranked and Mid-Market companies, Government Agencies and Universities including Org Charts, contact information and actionable sales triggers on over 18,000 companies completely with 98% verified email addresses, 96% direct dial phone numbers, reporting structure, new technology initiatives and current install base. While DiscoverOrg competitors rely on data aggregated from the web and crowdsourcing to gather and update data, DiscoverOrg's over-riding advantage is its team of 100+ in-house research analysts who make millions of calls every year to update and enhance its intelligence on IT, Marketing and Finance Decision Makers. DiscoverOrg customers are both Fortune Ranked and Startup companies selling both hardware and software as well as recruiting and staffing services.