Abstract: A fast, efficient, secure, distributed, and multiplatform P2P-based collaboration solution may be used to communicate information (e.g., files, documents, etc.) between computing devices across logical, functional, organizational, and protection boundaries. The collaboration solution may include a first computing device configured to determine whether it is included the same collaboration group as a second computing device, and automatically establish a peer-to-peer based communication link to the second computing device in response to determining that they included in the same collaboration group. The first computing device may then receive a document list that identifies documents stored in a memory of the second computing device, and compare the received document list with a local document list to identify missing documents.