What does OSSI stand for? 

Open Source Software Institute

Computing » Software

former symbol for Outback Steakhouse, Incorporated (de-listed)

Business » NASDAQ Symbols

Operating Systems Support and Integration

Computing » General Computing

Office of School Support and Improvement

Community » Schools

Operational Service Status Indicator

Computing » IT

Open Source Satellite Initiative

Governmental » NASA

One Stop Shopping Initiative

Governmental » Commerce

Office of Student Success Innovations

Academic & Science » Students

Orthopaedic and Spine Surgery Institute

Medical » Orthopaedic -- and more...

Ortho and Surgical Solutions, Incorporated

Medical » Surgical -- and more...

Organizational Science Summer Institute

Governmental » Institutes

Oracle Standard System Installation

Computing » Networking

Operations Support Systems Interface

Governmental » Military

Operation Support Systems Interface

Computing » Networking

Open Source Seed Initiative

Miscellaneous » Farming & Agriculture

Open Source Science Initiative

Community » Non-Profit Organizations

Open Science Software Initiative

Computing » Software -- and more...

Online Solo Strings Intensive

Community » Music

Oklahoma School Security Institute

Governmental » Institutes -- and more...

Office of System and School Improvement

Community » Schools

Office of Strategic Security Information

Governmental » Military

Office of Security and Strategic Information

Governmental » US Government

Operations Support System Interface

Computing » IT

Oracle Secure Search Initiative

Computing » IT