Open-source text annotation tool for building text classification, sequence labelling and relation extraction datasets.
doccano is an open-source text annotation tool supporting text classification, sequence labelling, named entity recognition, relation extraction and text dataset management. It suits NLP dataset building, corpus annotation, manual review and teaching tasks.
Use cases: text annotation, NER, text classification, relation extraction, NLP datasets
Note: Annotation projects need clear labelling guidelines and consistency checks.
