Square Australia is rated 4.1 out of 5 in the category eftpos equipment supplier. Read and write reviews about Square Australia. Square creates tools that help sellers of all sizes start, run and grow their businesses. Square's free point-of-sale service offers tools for every part of running a business, from accepting card payments and tracking inventory to real-time analytics and invoicing. Square was founded in 2009 by Jack Dorsey and Jim McKelvey and is headquartered in San Francisco, with offices in the United States, Canada, Japan and Australia.