Data Labeling Python Packages

label-studio

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

cleanlab

Cleanlab's open-source library is the standard data-centric AI package for data quality and machine learning with messy, real-world data and labels.

segments-ai

Segments.ai Python SDK

bbox-visualizer

Make drawing and labeling bounding boxes a piece of cake

auto-labeling-pipeline

doccano auto labeling pipeline helps doccano to annotate a document automatically.

doccano

Open source annotation tool for machine learning practitioners.

composeml

A machine learning tool for automated prediction engineering. It allows you to easily structure prediction problems and generate labels for supervised learning.

toloka-kit

Toloka-Kit is a Python library for working with Toloka API.

cleanlab-studio

Client interface for all things Cleanlab Studio

doccano-client

A simple client for doccano API.

potato-annotation

potato: the portable annotation tool

coral-annotation-tool

CAT: Coral Annotation Tool. A file-based(JSON) Structure from Motion (SfM) orthomosaic annotation tool for coral reef research

panlabel

The universal annotation converter

langformers

🚀 Unified NLP Pipelines for Language Models

hover

:speedboat: Label data at scale. Fun and precision included.

cleanlab-cli

Command line interface for all things Cleanlab Studio

knowlyr-datalabel

Serverless annotation framework with LLM pre-labeling, inter-annotator agreement analysis & offline HTML interface. CLI + MCP ready.

dash-annotate-cv

A Python library for computer vision annotation tasks using Dash

example-package-elisno

The standard package for data-centric AI, machine learning with label errors, and automatically finding and fixing dataset issues in Python.

pyheartex

Deploying machine learning for Heartex or Label Studio

superpipe-py

build unstructured to structured data transformation pipelines

labelkit

Superpipe - optimized LLM pipelines for structured data

kern-refinery

The data scientist's open-source choice to scale, assess and maintain natural language data. Treat training data like a software artifact.

swiftlabel

Keyboard-first image classification tool for ML practitioners