Figma - Team-based interface design, Figma lets you collaborate on designs in real time.

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.

InVision Studio - The world’s most powerful screen design tool

Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.

Design Principles - An open source repository of design principles and methods

RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.