ActiveDEMAND is an all-in-one marketing platform that includes features such as email marketing, lead capture, and web analytics. By contrast, ActiveCampaign is an email marketing platform specifically designed to manage large lists of contacts and build customer relationships. ActiveDEMAND provides users with a more comprehensive set of marketing tools, enabling marketers to automate the entire marketing process from lead generation to customer communication. It has advanced segmentation capabilities and powerful marketing automation. ActiveCampaign, on the other hand, provides an easier user interface and is more affordable. ActiveCampaign can be helpful for smaller businesses or businesses that only require email marketing.