Microsoft To-Do - Task management tool

Great F*cking Startup Advice - Strongly worded suggestions for startup founders

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

Startup Notes - Most actionable advice from each Startup School speaker

doo - A smart, simple app for reminders and to-dos

First Search - The world's best startup advice, curated and searchable.