Data Labeling Python Packages

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

label-studio

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

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.

potato-annotation

potato: the portable annotation tool

cleanlab-studio

Client interface to Cleanlab Studio

toloka-kit

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

annotide-training

Self-hosted data annotation and labeling platform for images, video, audio, text, PDF and LLM evaluation. Your storage, your models, your cloud.

shrewd

Turn repeated LLM classification calls into a small, fast, local model for one fixed task.

btx-skill-jev-judge

Claude Code plugin and Python CLI: hand a judgment repeated over many items to TypeSafe's Jev, with redaction, rate limiting, a pilot and a flat-question check.

tlabel

🦞 The World's First Sensor-Agnostic Tactile Data Annotation Toolkit — Load any tactile sensor, annotate visually, export a unified schema

doccano-client

A simple client for doccano API.

annotide

Self-hosted data annotation and labeling platform for images, video, audio, text, PDF and LLM evaluation. Your storage, your models, your cloud.

jev-table

AI columns for CSV/JSONL files with TypeSafe's Jev — typed answers, confidence, review queue, resume and cost preview. Local-first, BYO key.

coral-annotation-tool

CAT: Coral Annotation Tool for Structure from Motion (SfM) Orthomosaic coral reef annotation.

jevframe

Semantic AI for pandas and Polars: classify text, analyze sentiment, and score DataFrame rows with natural-language questions and full probabilities using TypeSafe Jev.

autosegmentor

End-to-end auto-labeling pipeline for video segmentation using SAM2 and CoTracker, with a PyQt5 GUI for interactive annotation and YOLO dataset generation.

cleanlab-cli

Client interface to Cleanlab Studio

hover

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

spanmark

A lightweight span-annotation widget for interactive Python environments

panlabel

Universal annotation converter