CVAT is a leading data annotation platform for image, video, audio, and 3D datasets. It offers open-source, cloud, and enterprise products, as well as labeling services, with AI-assisted labeling, quality assurance, team collaboration, analytics, and developer APIs.
Annotation Tool GitHub Repositories (2026) · Open Source Tools
Discover the best Annotation Tool open source repositories on GitHub. Explore trending tools, live star counts, source code, and developer projects updated daily.
Label Studio is a multi-type data labeling and annotation tool with standardized output format
INCEpTION provides a semantic annotation platform offering intelligent annotation assistance and knowledge management.
potato: the portable annotation tool
Genome browser and variant annotation
Add image annotation functionality to any web page with a few lines of JavaScript.
A CNN based image segmentation tool oriented to marine data analysis
PDF Rendering and Viewing API in Java
Human-feedback and data-governance infrastructure for RSI research: annotation, review, provenance and frozen dataset candidates.
:bulb: dokieli is a clientside editor for decentralised article publishing, annotations and social interactions