1. Customization Options: Kopage Website Builder offers a wide range of customization options such as templates, blocks, and widgets, allowing users to create unique and personalized websites. On the other hand, Mobirise provides a higher level of customization with its drag-and-drop interface, enabling users to have more design freedom and control over the layout of their websites.

2. Payment Plans: Kopage Website Builder offers a subscription-based payment plan which includes various features depending on the chosen package. In contrast, Mobirise follows a one-time payment model where users can purchase extensions and themes separately as needed, making it a more cost-effective option for some users.

3. Ease of Use: Kopage Website Builder is user-friendly and ideal for beginners with its straightforward interface and easy-to-use tools. On the other hand, Mobirise is also user-friendly but may have a steeper learning curve for those who are not familiar with website building tools, making it more suitable for users with some experience in web design.

4. Mobile Responsiveness: Kopage Website Builder emphasizes mobile responsiveness by offering mobile-ready templates and ensuring that websites created using the platform are optimized for various devices. Mobirise also focuses on mobile responsiveness, allowing users to preview and customize the mobile version of their websites separately to ensure a smooth browsing experience on smartphones and tablets.

5. Support and Community: Kopage Website Builder provides support through email and live chat, as well as a community forum where users can seek help and advice from other members. Meanwhile, Mobirise offers responsive support through email and a community forum, but lacks live chat support, which may be a drawback for users who prefer real-time assistance.

6. Third-party Integrations: Kopage Website Builder does not support many third-party integrations, limiting the ability to enhance website functionality with external tools and services. In comparison, Mobirise offers a wide range of integrations with platforms such as Google Maps, PayPal, and social media, allowing users to extend the capabilities of their websites easily.

In Summary, Kopage Website Builder and Mobirise differ in customization options, payment plans, ease of use, mobile responsiveness, support, and third-party integrations, catering to different preferences and requirements of users.