TiMaster is the Teaching Tool, Quiz Maker and Learning Manager of EMP software system. It allows online teaching and multiple-choice question creation in text editing environment with rich contents, including rich text format, images, tables, equations… Quiz tests created by TiMaster can be printed to printer or to PDF in compact formats, or be saved to storage for later use with TiTest, a quiz practice and assessment app of EMP. Sharing quiz test from TiMaster to TiTest over the Internet can be done by just a click. This feature allows instructors to share practice tests to their students in an ever easy way. In addition, TiMaster can works with multiple instances of TiTest on the same Local Area Network to support LAN-based quiz test mode.