What are some alternatives?
When comparing Quickie and Slack Video Calls, you can also consider the following products
Daily.co for Intercom - Free video calls & screen shares embedded in Intercom
Zoom - Zoom unifies cloud video conferencing, simple online meetings, group messaging, and a software-based conference room solution.
Principle for Mac - Animate your ideas, design better apps
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
Wistia - Host, manage, and track your videos with the best video marketing tools in the (known) universe.
Amazon Chime - Online meetings and video conferencing