PayScale - PayScale is an online salary, benefits and compensation information platform.
Nifty - Manage projects, work, and communications in one place.
Salary.com - A compensation and human resource management solutions application.
Intercom on Product Management - The ultimate resource for aspiring product managers
Workday - Workday is an on‑demand financial management and human capital management software solution.
Party Line - Use Slack to manage your projects