ManageWP - ManageWP is a service for bloggers, site owners and web based companies helping them manage multiple WordPress sites from one dashboard.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
InfiniteWP - Manage unlimited https://alternativeto.net/software/wordpress/ sites from a central admin panel.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
WP Remote - WP Remote provides a single place to monitor and update all of your WordPress sites.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.