TwitCasting is a livestreaming service operated by Moi Co., Ltd., headquartered in Tokyo, Japan. In early 2013, TwitCasting was developed as a way to use the Twitter feed to stream content from smartphones directly onto a user's channel. As of July 2021, it had over 33 million registered users. As of March 2020, it had the most monthly active users among livestreaming apps in Japan, according to App Ape Lab analytics.