Designers as a team visually create and share ideas. In order to promote creativity, they organize ideas in non-linear, spatial, and flexible structure. Post on Dimension is a novel groupware design that consists of three types of visual communication tools, Card Table, Scribbling Board, Document Box. In Card Table, user can create, arrange, scales each card to perform varous methods used in design process. In Scribbling Board, image based on informal communication using article with scribble(to reference some part of image, express irrational gesture) can be used. With Document Box every user share various type of file, similar to FTP(File Transfer Protocol) but more information can be stored.