Community Exchange System (CES) is a community-based exchange system providing for its users to trade their goods and also services, both in the area and remotely. It could also manifest as a global complementary trading network that runs without money since it is commonly recognized. Unlike the typical money-based exchange system, the CES has no physical currency. The idea that a currency is needed before any trading can take place is a historical one and more irrelevant in nowadays of computers and also the Internet.