Coming from a CSM background, Zendesk creates an easy-to-use and ticketing system to help me respond quickly to customers, loop in other teams, and track trends of questions and concerns.
As a PMM, so many pieces need to come together to make for a success launch. Monday ensures that everyone knows what's going on, who is working on what, and if there are any blockers to creating the most impact.
As a PMM, 1pass is a great tool to make sure I can go in and play with any product instance that the teams are building, without having to ask for permission every time!