Mockup Builder is a software solution that helps design software and website mockups to reduce time and costs during development. It addresses issues like uncertainties in early design phases, functional requirement errors, and project stakeholder misunderstandings. The cloud-based tool offers over 120 UI elements, templates, collaboration, and export options. Its target audience includes software companies, designers, and individuals. With annual revenues of top competitors ranging from $1.6M to $3.9M, the mockup tools market is estimated at $13M and growing. Mockup Builder plans to generate income from standalone, enterprise, and subscription licensing while expanding through investments and new markets.