Precursor is a collaborative prototyping tool that enables teams to sketch and design wireframes quickly and efficiently. It focuses on simplifying the prototyping process, allowing users to create interactive mockups and flow diagrams directly within the platform. Precursor provides a straightforward interface designed to enhance collaboration among team members, making it easy to share ideas and gather feedback. This tool is particularly useful for designers and developers looking to iterate and refine concepts before diving into full-scale development. You can learn more about their offerings at [precursorapp.com](http://precursorapp.com).