Not Your Father's/Mother's Tripos

At Cambridge University, the examinations are known as the Tripos - a reference, it is thought, to the three-legged wooden stool that candidates originally sat on during their orals.

Now the P2P Foundation has come up with another "three-legged stool", one of whose legs (number 2: open "everything") is not a million miles from the page you are reading. Great minds, etc.