There are many CMSs available for nonprofits, each with its own advantages and disadvantages. WordPress is a free, open-source, and flexible CMS that powers more than 40% of the web. It is easy to use, customize, and extend with thousands of themes and plugins, making it ideal for blogs, news, and simple websites. Drupal is a free, open-source, and powerful CMS that offers high security, scalability, and functionality. It is more complex and technical to use but can handle large and diverse content types and structures, making it suitable for e-commerce, fundraising, and community websites. Squarespace is a paid, hosted, and elegant CMS that provides beautiful design, templates, and tools. It is simple and intuitive to use but has less flexibility and integration options; thus it's a good choice for portfolios, galleries, and landing pages. Wix is a paid, hosted, and user-friendly CMS that enables drag-and-drop design, features, and apps. It is quick and easy to use but has less control and performance; thus it's suitable for small businesses, events, and online stores. Finally, HubSpot is a paid, hosted, all-in-one CMS that combines content creation with marketing, sales, and service. It is sophisticated and comprehensive to use but has a high cost and learning curve; hence it's ideal for lead generation conversion retention.