This is the GitHub home of the TEI Special Interest Group "TEI for Linguists" (LingSIG).
The pinned TEI repository is a fork of the Text Encoding Initiative Consortium's repository containing the TEI Guidelines. Selected branches of that repository are processed by the Jenkins continuous integration service maintained by Peter Stadler at the University of Paderborn.
The LingSIG has had its home page at the TEI Wiki.
Some resources are still present at the LingSIG project at SourceForge (years ago, SF was the home for open-source development, hosting the TEI Guidelines among other valuable projects).