1. Customization Flexibility: One key difference between Builder and Tilda is customization flexibility. Builder offers a more customizable approach with the ability to edit the code directly, giving users more control over the design and functionality of their website. On the other hand, Tilda provides a more user-friendly drag-and-drop interface with pre-designed blocks and templates, limiting the level of customization available to users.

2. E-commerce Capabilities: Another difference is in the e-commerce capabilities of both platforms. Builder offers robust e-commerce features, allowing users to set up and manage online stores with ease. In contrast, Tilda has more limited e-commerce functionality, making it less suitable for businesses that rely heavily on online sales.

3. SEO Features: When it comes to search engine optimization (SEO), Builder is known for its strong SEO features that help improve website visibility on search engines. Tilda, on the other hand, may have basic SEO tools but lacks the advanced optimization options provided by Builder, making it less ideal for users looking to enhance their website's search engine rankings.

4. Integration Options: Builder and Tilda differ in the range of integration options they offer. Builder has a wider range of integrations with third-party tools and services, allowing users to connect their website with various applications for added functionality. Tilda, while it does offer some integrations, may have a more limited selection, potentially restricting users who need to connect their website with specific tools.

5. Ease of Use: In terms of ease of use, Tilda is often praised for its user-friendly interface and intuitive design, making it ideal for users with little to no coding experience. On the other hand, Builder, while still user-friendly, may require a bit more technical knowledge due to its deeper customization options and coding capabilities.

6. Pricing Structure: Another significant difference is the pricing structure of both platforms. Builder offers various pricing plans that cater to different budgets and needs, including free versions and premium plans with advanced features. Tilda also has different pricing options but may be more limited in terms of scalability and features compared to Builder's offerings.

In Summary, Builder shines in customization flexibility, e-commerce capabilities, and SEO features, while Tilda stands out for its user-friendly interface, ease of use, and potentially more competitive pricing for simpler website needs.