Inferno was sold to Vita Nuova Holdings Ltd in March 2000. Other licensed versions exist, I was working on one until 2007. Plan9 3rd edition was released June

Inferno was sold to Vita Nuova Holdings Ltd in March 2000. Other licensed versions exist, I was working on one until 2007. Plan9 3rd edition was released June 7, 2000 Plan9 4th edition was released in 2002 This version went into continuous improvement mode, the latest commit in the tree was Apr 29 2017