The macOS equivalent, Microsoft Office 2004 for Mac was released on May 11, 2004. It was the successor to Office XP and the predecessor to Office 2007.
Office 2003 was released to manufacturing on August 19, 2003, and was later released to retail on October 21, 2003. Microsoft Office 2003 (codenamed Office 11 ) is an office suite developed and distributed by Microsoft for its Windows operating system. Trialware and software as a service (Microsoft Software Assurance)