An extensive library for processing FoLiA documents. FoLiA stands for Format for Linguistic Annotation and is a very rich XML-based format used by various Natural Language Processing tools.
FLAT is a web-based linguistic annotation environment based around the FoLiA format (https://proycon.github.io/folia), a rich XML-based format for linguistic annotation. Flat allows users to view annotated FoLiA documents and enrich these documents with new annotations, a wide variety of linguistic annotation types is supported through the FoLiA paradigm.
GaLAHaD (Generating Linguistic Annotations for Historical Dutch) allows linguists to compare taggers, tag their own corpora, evaluate the results and export their tagged documents.