As of writing, Online now offers nearly all the features of the desktop software and several additional ones. Much of the recent development effort has been on bringing the online version up to feature parity with the desktop products. However, Quickbooks Online has been Intuit’s clear focus for a number of years, along with mobile.
Quickbooks for Mac, as the name suggests, is a desktop tool for Mac users, Quickbooks Pro is a desktop accounting tool for small businesses, and Quickbooks Online is a subscription-based cloud accounting tool. The company offers multiple versions of its product to serve different user populations. The Quickbooks family of accounting products from Intuit has maintained a vastly high portion of the small business market share for over a decade.