kubell Co., Ltd. provides business chat services in Japan. It operates through two segments, Chatwork and Security. The Chatwork segment provides peripheral services related to chat. This segment also offers task management, file management, and video calling services. Its Security segment acts as a sales agent for security software. It provides consultancy services; and develops and sells SAMBA, a secure cloud storage solution. The company was formerly known as Chatwork Co.,Ltd. and changed its name to kubell Co., Ltd. in June 2024. The company was incorporated in 2004 and is headquartered in Minato-ku, Japan.