PC and Mac website software used to be very popular – maybe you can even remember Microsoft Frontpage or Macromedia Dreamweaver, as it used to be called. The advantage of such programs is that you typically pay (a larger amount) upfront and can build as many websites as you like. The downside is that you need to take care of hosting your website yourself, which incurs additional costs.
These days most people clearly prefer hosted website builders such as Wix, Weebly, and Jimdo due to their added simplicity. You can edit your site from different computers, no matter if it’s a Mac or PC. If you absolutely want an installable website builder software, I would recommend you check out Mobirise. The basic version is free, you only pay if you purchase one of their premium designs or extensions.