Dr. Baraniuk is one of the founders of the Open Education movement and has been involved in a variety of open ed projects since founding Connexions in 1999, including
- OpenStax textbooks - publishing free, high-quality college, AP, and K-12 textbooks
- OpenStax Tutor - an open-source intelligent tutoring system based on the latest results in cognitive science and machine learning
- OpenStax CNX (Connexions) - one of the world's first and largest open education platforms
As of August 2018, OpenStax' 29 free and open-source texts are in use by 16,000 faculty at 5100 institutions (including 48% of all US colleges and universities). Since OpenStax' founding in 2012, 5 million students have saved over $500 million.