Princeton doesn’t run a huge MOOC catalog, but the free courses it does offer are taught by world-leading faculty and worth seeking out in 2026.
What is available free
- Algorithms: one of the most respected free computer science courses anywhere, on Coursera
- Coursera audit access: Princeton courses in computing, statistics, and the humanities, free to audit
- Networks and economics: interdisciplinary courses bridging math, social science, and tech
How to access
- Audit on Coursera: watch lectures and read materials free; certificates are optional and paid
- Check faculty pages: some professors post full lecture notes openly
Worth knowing
- No credit: free access is for learning, not a Princeton transcript
- Rigor is real: these courses assume effort — treat them like the real thing
The verdict
Princeton’s Algorithms course alone justifies a look — a genuine computer-science education for free. Audit it, do the assignments honestly, and skip the paid certificate unless you need the credential.