What is the reason for this? Interior design software, free or paid, helps architects and designers to assess the quality of the interior at an early stage of design offers a comprehensive list of furniture including windows, doors, beds, and tables in different styles to help them in creating an accurate model of the room. Free interior design software in detailĪs statisticsshow, the interior design software market is projected to reach USD 6,872.11 million by 2028 from USD 3,337.70 million in 2020 it is expected to grow at a CAGR of 9.8% between 20.Best free interior design software to use in 2023.