If you're a designer or founder looking to create and publish marketing sites or portfolios with little to no coding, choose Framer. Its user-friendly interface allows you to design, animate, and launch real websites from a single canvas. However, be prepared to invest in a paid plan for custom domains and to scale your site, as well as acknowledge that it may not offer the same flexibility as a fully coded solution for complex applications.
On the other hand, if you are a developer or part of a product team creating custom canvas applications, tldraw is the better option. Its infinite canvas and real-time collaboration features enable innovative design and prototyping. The ability to transform sketches into functional UI adds significant value for app development. However, if open-source licensing is a key requirement for your project, be cautious, as commercial use necessitates a paid license.