Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Rithm - Chat with music
Workflowy - A better way to organize your mind.
Tapbot - A slackbot that helps your team get the small things done
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
The Ultimate Productivity Stack - Curated directory of tools to supercharge your productivity