Google Keep - Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.

Gone - An ephemeral to-do list

PandaDoc - Boost your revenue with PandaDoc. A document automation tool that delivers higher close rates and shorter sales cycles. We've helped over 30,000+ companies.

Streaks - The to-do list that helps you form good habits.

OneNote - Get the OneNote app for free on your tablet, phone, and computer, so you can capture your ideas and to-do lists in one place wherever you are. Or try OneNote with Office for free.

Todoist - Todoist is a to-do list that helps you get organized, at work and in life.