1. WordPress

It is a versatile CMS with a user-friendly interface, vast theme/plugin options, strong community for constant updates and support. Ideal for blogs, e-commerce, & corporate sites.

2. Magento

It is a top-tier CMS software emphasizing security, SEO, and customization ideal for sizable online stores, with multi-store management and mobile-responsive content.

3. Joomla

It is a seamlessly blending user-friendly interface with advanced capabilities empowering diverse websites via intuitive design, extensive extensions, and robust community support. 

4. Drupal

Drupal is a developer-favored, scalable CMS for intricate structures and large projects, with modular design and API support. 

5. CMS Hub by HubSpot

It is an integrated CMS that seamlessly combines content management with its robust CRM platform, offering an all-in-one solution for effective website management and growth.