A lot of CMS platforms are available in the market where WordPress is one of the most popular ones. It uses plugin worldwide and meets virtually needs. Whereas, Hubspot publish their CMS termed as Content Optimization System(COS). It differs from traditional CMS and integrates holistically with a wide range of tools, pages, and features to deliver call-to-action, workflows, and more.Talking about which is better is a secondary thing. Firstly you need to know which suits you better for your SME or large enterprise. You can use both solutions to manage your site with online marketing methodology.