Online cooperative or collaborative work have become common nowadays, because this helps to do any job without require meet together physically in one place. On the other hand, due to out current reality, inherent to many health conditions, traffic difficulties, and social insecurity; virtual or distance education is increasingly being promoted. In that sense, the main goal of this research work is develop a web based collaborative tool for rapid designing paints. This could be useful in many different areas, like as replacing the classical whiteboard, or express ideas to a workgroup, or even to design any realistic picture. This application allows to work together with a group of around ten connected users to collaborate virtually designing drawings in real time. The interaction experience depends on the internet bandwidth of all the users. For the implementation, many open source popular frameworks and programming utilities have been used. The presented results demonstrate the high scalability and versatility of our system being capable of managing hundreds of objects in real time.