Balsamiq Mockups is a graphics and design tools that offer quick solutions for sketching and drawing the user interface of a software development project. It offers digital drawing and sketching, you can create and tweak designs in real time during a design discussion meeting and you can easily to tweak and rearrange your projects. So you and your team can now work together in the same tool to quickly iterate over wireframes before writing code and this is the multiple ways to share and get feedback on your designs. Mockups is designed to helps you achieve near-real-time collaboration, and share your work via file sharing in the cloud like DropBox, and many more.