Argilla
OSSArgilla is an open-source platform designed for data annotation and synthesis, specifically focused on improving NLP dat...
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See our top picks: Best Data Annotation and Synthesis AI Agents (2026) →Argilla is an open-source platform designed for data annotation and synthesis, specifically focused on improving NLP dat...
COCO Annotator is a web-based tool designed for annotating images with segmentation masks, bounding boxes, and keypoints...
CVAT is an open-source, web-based tool designed for annotating images and videos to train computer vision models. It sup...
Doccano is an open-source text annotation tool designed to assist in creating labeled data for machine learning tasks. I...
Gretel Synthetics is an open-source tool for generating synthetic structured and unstructured text data using differenti...
Label Studio is an open-source tool for labeling and annotating data across multiple domains, including text, images, au...
NeMo Curator is a GPU-accelerated framework designed for large-scale data curation and preprocessing, specifically optim...
refinery is an open-source tool designed to help data scientists scale, assess, and maintain natural language datasets. ...
SDV (Synthetic Data Vault) is an open-source ecosystem for generating synthetic data that mimics the statistical propert...
Semantic Segmentation Editor is an open-source tool designed for annotating camera and LIDAR data with pixel-level preci...
synthcity is an open-source library designed for generating and evaluating synthetic tabular data, with a focus on maint...
ViPE is an open-source AI tool that processes raw video footage to automatically generate camera pose annotations and de...
YData Synthetic is an open-source Python library that generates synthetic tabular and time-series data using advanced ge...