This document provides a list of the top 10 most successful SaaS companies of all time. It describes each company's founding year, founders, services provided, and their impact. Some of the companies highlighted include Hubspot for inbound marketing and CRM tools, Oracle for cloud computing and enterprise software, Amazon Web Services for cloud services, Google for internet services like Gmail, and Zoom for video conferencing. The document serves as an overview of the long-term leaders in the SaaS industry.