For quick brainstorming sessions or developing rough sketches, Excalidraw is your best choice. Its charming hand-drawn aesthetic makes it perfect for developers sketching architecture or anyone needing low-fidelity visuals. Plus, it’s free, open-source, and works offline, allowing for data to remain local. Avoid it if you need polished visuals or a comprehensive design tool.
On the other hand, if you're a designer or founder looking to create and publish marketing sites or portfolios without coding, go with Framer. It offers strong animations and interactive features, making site creation easy and appealing. However, be prepared for limitations in custom domains and complexity, as a paid plan is necessary for broader capabilities. Choose Framer if you want to build real sites, but skip it if you're focused on developing complex web applications.