How to draw a 2D wireframe mockup
Just in case you need a clean draft of your startup’s user interface or the next website’s design, you may check out Mockflow, Hot Gloo, Balsamiq Mockups or the entirely free web application Mockingbird. For some, Google Docs’ drawing option while using templates might be an alternative, too.
If you want to add some clickable buttons, page load events and further logic to simulate a client-ready prototype, you could try Lumzy instead. Mocksup is another great solution that allows you to not only upload static mockups and customize their background and alignment but also link them together simulating a working prototype.
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