We developed a landing page using Webflow. This is simple but powerful tool that allows building full-fledged sites and transfering them to any hosting without being tied to a specific platform.
Instead of a fully graphical approach to creating a site, as in Tilda, there is more code involved when working with Webflow: you can create CSS classes, use flexboxes and grid, and instead of squares and lines, <section> and <div> appear on the page.