Forté Agent is an email and Usenet news client used on the Windows operating system. Agent was conceived, designed and developed by Mark Sidell and the team at Forté Internet Software in 1994 to address the need for an online/offline newsreader which capitalized on the emerging Windows GUI framework. By 1995 Agent had expanded to become a full-featured email client and remains a widely-used application for integrating news and email communication on Windows.

Agent's Usenet features include access to multiple news servers, import/export of NZB files, threaded discussions and a highly configurable user interface. It has long supported yEnc as well as many other coding schemes, and has the capability of joining incomplete binary attachments, which is useful in the event of posting errors.

Agent email introduced the concept of route by identity, a simple drag-and-drop way to train Agent to route incoming email. Together with built-in Bayesian junk detection, route by identity provides nearly 100% accurate spam filtering.