The Linguistic Annotation Wiki (The LAW) described tools and formats for creating and managing linguistic annotations. “Linguistic annotation” covers any descriptive or analytic notations applied to raw language data.
The basic data may be in the form of time functions — audio, video and/or physiological recordings — or it may be textual. The added notations may include transcriptions of all sorts (from phonetic features to discourse structures), part-of-speech and sense tagging, syntactic analysis, “named entity” identification, co-reference annotation, and so on. The focus was on tools which have been widely used for constructing annotated linguistic databases and on the formats commonly adopted by such tools and databases.
The Wiki hasn’t been updated since 2016 and is now archived as a static webpage here.