What are some alternatives?
When comparing Challenger POS & Restaurant and Square, you can also consider the following products
POSper - POSper is a Point Of Sale (POS) System with touch screen support designed for small businesses.
Lightspeed POS - retail and restaurant point-of-sale, ecommerce, and omnichannel solution
uniCenta oPOS - Award winning Point Of Sale
SpringBoard Retail - Springboard Retail POS software a robust, user-friendly cloud point of sale solution designed for the business of retail. A complete retail management platform built for growing single, multi and franchise brands.
KORONA.pos Cloud - KORONA.
Odoo Point of Sale - Odoo is an online point of sale solution for retail and restaurants.