Web design software can be used to create both the structure and look of a website. Examples of web design software are website builders, website optimization tools, CMS, etc. Each of these focus on a different part of the website, each part needed to create a wholesome website design and structure. The best web design software will allow you to create a website quickly and easily, without needing to learn coding or other technical skills. With the many different types of web design software available, it is important to choose one that suits your needs and skill level.