OSSI meaning in Softwares ?

Answer: What is Open Source Software Institute mean?

The Open Source Software Institute is a U.S.-based 501(c)(6), non-profit organization whose mission is to promote the development and implementation of open-source software solutions within US Federal, state and municipal government agencies. OSSI was established in 2015 and has focused on strategic initiatives to promote the adoption of open source within US Department of Defense and Department of Homeland Security.

reference

Full Form	Category
Office of Student Success Innovations	Academic & Science
Outback Steakhouse, Inc.	Business
Office of School Support and Improvement	Community
Office of System and School Improvement	Community
Operating Systems Support and Integration	Computing
Operations Support System Interface	Computing
Oracle Secure Search Initiative	Computing
One Stop Shopping Initiative	General
Operational Service Status Indicator	General
Open Source Satellite Initiative	General
Open Source Seed Initiative	General
Office of Security and Strategic Information	General
Office of Security Strategic Information	General
Oracle Standard System Installation	General
Operation Support Systems Interface	General
Organizational Science Summer Institute	Governmental
Oklahoma School Security Institute	Governmental
Open Source Software Institute	Softwares