Ash HN: What are examples of SaaS companies that don't charge per user?

https://keen.io/pricing/ - per event streamed

https://logentries.com/pricing/ - per gigabyte sent

https://sendgrid.com/pricing/ - per email sent

Basecamp has been doing so for a while, which is daring for a project management app to do while their competitors do the opposite - https://basecamp.com/pricing