TEI: New release of the Versioning machine
http://tei-l.970651.n3.nabble.com/New-release-Versioning-Machine-5-0-tp4028200.html
The Versioning Machine is a framework and an interface for displaying multiple versions of text encoded according to the Text Encoding Initiative (TEI) Guidelines.
Versioning Machine 5.0: http://v-machine.org/