My Starred SaaS Platforms

Salesforce

Sets the standard for CRM. Used by many, hated by some (sometimes me), loved by even more (also sometimes me and see: Dreamforce Dreamboat). Off-the-shelf Sales, Marketing, and Support modules with built-in functionality beyond one's imagination. Plus incredibly robust point-and-click automation getting better with every release and the always available Apex, Visualforce, and (now) Lightning coding options for expansion and customization.

Quickbase

It's in the name: Quickbase is Quick. Learn how to build your own database in Quickbase in the morning and have a finished product by night. Build responsive page layouts with custom logic, create numeric roll-up summaries infinite tables deep (particularly helpful for accounting solutions), and show off your data through pretty, easy-to-create dashboards. Plus have the option to sync your Quickbase instance with external data via built-in integration with Salesforce, Zendesk, or Dropbox.