Open Source Initiative 
Being an OSI member is a great way to get directly involved in Open Source community development and advocacy. Don't think of this as helping just one Open Source project—think about helping all Open Source projects. #JoinOSI
Support Open Source - Renew your membership or become a member of OSI TODAY! #JoinOSI
Only with a strong and active member base can we continue in our role as the internationally recognized nexus of trust, the foundation for, and authority in Open Source software. #JoinOSI
"The Open Source Initiative means, to me, the guardian of the letter and the spirit of #opensource." - Thierry Carrez, OSI Board Director, VP of Engineering - Open Infrastructure Foundation #JoinOSI
Just a few days left of our membership campaign. Help us reach our goal - join today! #JoinOSI
"Open Logic by Perforce supports OSI because we believe in its mission to protect the Open Source Definition." - Perforce, OSI Supporter Sponsor #JoinOSI
Join or renew today! #JoinOSI
Being an OSI member is a great way to get directly involved in open source community development and advocacy. Don't think of this as helping just one open source project—think about helping all Open Source projects! #JoinOSI
Only one week left of our 2022 membership campaign. If you haven't already - please consider joining or renewing your #OSI membership! #JoinOSI
If you're not ready to be a Supporting member, are a student, have low or no-income, you can still support OSI by joining as a free Basic member. #JoinOSI