| Subject | English | Japanese |
| comp., MS | calendar user agent | カレンダー ユーザー エージェント (A client program such as Microsoft Outlook. Calendar information can be sent between calendar user agents that comply with the iCalendar specification) |
| comp. | n Directory User Agent | ディレクトリ利用者機能体 |
| comp. | n Directory User Agent | ディレクトリ利用者エージェント |
| comp., MS | globally routable user agent URI | グローバルにルーティング可能なユーザー エージェント URI (A URI that a SIP program can use to route a call to a specific agent) |
| comp. | n user agent | ユーザ・エージェント |
| comp., MS | user agent | ユーザー エージェント (A program that helps a client connect with a server) |
| comp. | n User Agent | 利用者機能体 |
| comp. | n user agent | ユーザエージェント |
| comp., MS | user agent string | ユーザー エージェント文字列 (A string that identifies a user's web browser and provides details about the user's computer system to web servers hosting the websites that the user visits) |