An open access community is a digital repository or an online community where scientific information and communication are free to the public through computing technologies (Hanauske, M., et al 2007; Hubbard, C., et al, 2005). Open access community provides a new way for knowledge sharing and knowledge management. It takes advantage of collective expertise by providing a repository for research papers and research data that are scattered or take a long time to be published. The panel will discuss experiences and challenges people face in various open accesscommunities. Particularly, we will discuss the following issues: How did each community or repository achieve the functions of "organize" and "share" among people having a common interest in the community?How long did it take to launch and establish an open-access community?