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. Slack (software):  The name is an acronym for "Searchable Log of All Conversation and Knowledge".
Polish