Organizations
- SAGE (organization), a professional organization for IT system administrators
- Sage Publications, an academic publishing company
- The Sage Colleges, an educational institution in New York
- Sage Group, producers of software (especially accounting software)
- Sage Telecom, a U.S. telecommunications company
- SAGE Computer Technology, a U.S. computer manufacturer, later named "Stride Computers"
- Sage SA, a software publishing company for banking and finance industries
- SAGE-AU, an Australian professional association of system administrators
- The Sage Gateshead, a centre for musical education, performance and conferences
- Services & Advocacy for GLBT Elders, an organization for improving the lives of LGBT older adults
- Society of American Gastrointestinal and Endoscopic Surgeons (SAGES), a professional organization for surgeons
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