Many learners of Japanese want to acquire the ability to speak "natural" Japanese, but only a limited amount of time is allowed for pronunciation and prosody instruction in class. Also, teachers themselves have often not received good instruction in pronunciation and prosody, so it is difficult for them to provide such instruction to learners. It is well known that emphasis on phrasing and pausing is very effective and efficient in improving naturalness. To improve it even more, knowledge of word accent is required, but Japanese word accent often varies depending on context. At present there are no good textbooks for teaching Japanese accent and its variability. To help provide learners with better materials, this project developed the Online Japanese Accent Dictionary (OJAD) to support effective Japanese pronunciation and prosody instruction. The OJAD is currently being used in Japanese language teaching programs around the world.