Startup Playbook - Written by Sam Altman & Illustrated by Gregory Koberger
Notebook.ai - A smart notebook that grows and collaborates with you
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.
Bookblock - Design-led custom notebooks & stationery.
Founder Institute - Since 2009, the world’s fastest-growing startups have used the Founder Institute to raise funding, get into seed-accelerators, generate traction, and more.
Action Method Notebooks - Notebooks for making ideas happen