The messaging app that is an acronym for "Searchable Log of All Conversation and Knowledge" was founded by a business of what descent?
Stewart Butterfield Daniel Stewart Butterfield (born Dharma Jeremy Butterfield, 1973) is a Canadian entrepreneur and businessman of Polish descent, best known for being a co-founder of the photo sharing website Flickr and team messaging application Slack.
Jerry Kaplan Samuel Jerrold "Jerry" Kaplan (born March 25, 1952) is an American computer scientist, author, futurist, and serial entrepreneur. He is best known as a pioneer in the field of pen computing and tablet computers. He is the founder of numerous companies, including GO Corporation, whose technology was used to develop the first smartphone and tablet PC. Kaplan is the co-founder of OnSale, the first B2C online auction site launched in 1994, five months prior to eBay. He is a recipient of the 1998 Ernst & Young Emerging Entrepreneur of the Year Award and author of the best-selling book "Startup: A Silicon Valley Adventure." He has been featured in major news publications, including The New York Times, The Wall Street Journal, Forbes, Red Herring, and Bloomberg Businessweek. Kaplan is also the author of the 2015 book "Humans Need Not Apply: A Guide to Wealth and Work in the Age of Artificial Intelligence". Additional companies he has co-founded include artificial intelligence company Teknowledge, Inc. and social game website Winster.com. Kaplan is currently a Fellow at the Stanford Center for Legal Informatics.