Software Engineering recognizes that a good strategy to improve quality of its products is by means of Process Improvement. A factor could influence the companies to manage an improvement project is the inclusion of technological support using groupware tools in order to support Process Improvement Projects. This paper describes a collaboration model and a software tool oriented to foster communication and coordination within a work group, supporting developments of SPI (Software Process Improvement) in small software companies. This work has been validated in a preliminary manner using focus group technique with expert people of SPI obtaining interesting results.