There are two approaches...
- 1.
Use a technographic data provider: Kevin J. mentioned ZoomInfo, Angela T. mentioned BuiltWith, there's also HG Insights (regarded as the highest quality in the industry), as well as some wholesalers like CoreSignal have tech install data.
- 2.
Do a title keyword search to reverse engineer the companies with SFDC. Clay or Airscale are particularly good solutions for this as you can get very specific with keywords, description, and skills. An example would be to pull a list of Contacts that have "SFDC" in their title -- this would of course indicate that the Company they are working with uses Salesforce.
Given the large audience you will pull back, I'd suggest not starting with Technographics, but instead start with your employee counts, industries, and other segmentation before layering in tech install. Tech install data is notoriously 'directional' and not crazy accurate. Technologies that are able to be picked up on the front of a website (think Shopify, Hubspot, etc.) are much easier to pull....the rest of the information is typically collected through job postings.
Hope this helps.
