Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Do - Do helps you run productive meetings. Do work you love.
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Kurator - The premier Chrome extension for savvy researchers and publishers alike. Curate your interest and publish to your website, newsletter and social media sites directly from the browser.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
Vabotu - More than slack. More than Trello. FREE.