The Pitch - The podcast where early stage startups pitch investors
Cron - Cron Calendar.
The Startup Playbook - How-to guide for building your startup from the ground up
zcal - zcal is the fastest way to schedule every meeting for Free and make it personal.
Daily Hunt - A podcast with the makers of hunted products, every day
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.