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

Grounded SAM: Marrying Grounding DINO with Segment Anything & Stable Diffusion & Recognize Anything - Automatically Detect , Segment and Generate Anything

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.

LabelImg is now part of the Label Studio community. The popular image annotation tool created by Tzutalin is no longer actively being developed, but you can check out Label Studio, the open source data labeling tool for images, text, hypertext, audio, video and time-series data.

Open source annotation tool for machine learning practitioners.

Build calibrated AI Functions from human feedback using Jev and GEPA.

A lightweight, polished AI-assisted interactive annotation tool for object detection and instance segmentation.