Top ANNOTATION-TOOL GitHub Repositories & Tools (2026)

Computer Vision Annotation Tool (CVAT) is a leading platform for building high-quality visual datasets for vision AI. It offers open-source, cloud, and enterprise products, as well as labeling services, for image, video, and 3D annotation with AI-assisted labeling, quality assurance, team collaboration, analytics, and developer APIs.

Add image annotation functionality to any web page with a few lines of JavaScript.

PDF Rendering and Viewing API in Java

Auditable human-feedback annotation, review, provenance, and frozen training-data export.