Label Studio is a multi-type data labeling and annotation tool with standardized output format

PDF viewer with text annotation support. Add, style, and position text boxes on PDF pages, save annotations locally, and download annotated PDFs.

An open-source on-prem text annotation software suite.

Open source text annotation software created by the french supreme court 'Cour de cassation'

🔬 Website to help browse and publish Nanopublications

Data annotator for machine learning allows you to centrally create, manage and administer annotation projects for machine learning

A web-based document annotation tool, powered by GPT-4 🚀

Annotato is a React component that helps to annotate or display and add interactivity to previously made annotations in a given text.

FAST is an annotation tool that focuses on mobile devices. https://aclanthology.org/2021.emnlp-demo.41/