Microsoft Chat 2.0 is a simple text chatting program included in the Windows NT-line of operating system, including Windows NT 3.x, Windows XP and Windows Server 2003.
Outlook Express 4.0 is the successor of Microsoft Internet Mail and News, an early e-mail client add-on for Internet Explorer 3. Internet Mail and News handled only plain text and rich text (RTF) e-mail, it lacked HTML e-mail.