Data Annotation Tools ML Frameworks

Web-based and desktop applications for labeling, annotating, and tagging data (images, videos, text, documents) to create training datasets for ML models. Does NOT include dataset collections, data privacy frameworks, or crowdsourcing platforms without annotation UI.

There are 100 data annotation tools frameworks tracked. 4 score above 70 (verified tier). The highest-rated is cvat-ai/cvat at 83/100 with 15,452 stars. 5 of the top 10 are actively maintained.

Get all 100 projects as JSON

curl "https://pt-edge.onrender.com/api/v1/datasets/quality?domain=ml-frameworks&subcategory=data-annotation-tools&limit=20"

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#	Framework	Score	Tier	Stars	Language
1	cvat-ai/cvat Annotate better with CVAT, the industry-leading data engine for machine...	83	Verified	15,452	Python
2	HumanSignal/label-studio Label Studio is a multi-type data labeling and annotation tool with...	78	Verified	26,703	TypeScript
3	wkentaro/labelme Image annotation with Python. Supports polygon, rectangle, circle, line,...	73	Verified	15,641	Python
4	CVHub520/X-AnyLabeling Effortless data labeling with AI support from Segment Anything and other...	72	Verified	8,375	Python
5	doccano/doccano Open source annotation tool for machine learning practitioners.	69	Established	10,571	Python
6	virajmavani/semi-auto-image-annotation-tool Anno-Mage: A Semi Automatic Image Annotation Tool which helps you in...	61	Established	590	Python
7	l3p-cv/lost Label Objects and Save Time (LOST) - Design your own smart Image Annotation...	59	Established	577	Python
8	snorkel-team/snorkel A system for quickly generating training data with weak supervision	58	Established	5,940	Python
9	phurwicz/hover :speedboat: Label data at scale. Fun and precision included.	57	Established	331	Python
10	sumn2u/annotate-lab Annotate-lab is an open-source image annotation tool for efficient dataset...	56	Established	125	JavaScript
11	autodistill/autodistill Images to inference with no labeling (use foundation models to train...	56	Established	2,644	Python
12	pixano/pixano Data-centric AI building blocks for computer vision applications	55	Established	55	Python
13	PaddleCV-SIG/PaddleLabel 飞桨智能标注，让标注快人一步	53	Established	294	Python
14	wikimedia/wikilabels A generalized labeling service for MediaWiki	53	Established	29	JavaScript
15	explosion/jupyterlab-prodigy 🧬 A JupyterLab extension for annotating data with Prodigy	51	Established	189	TypeScript
16	HumanSignal/labelImg LabelImg is now part of the Label Studio community. The popular image...	51	Established	24,849	Python
17	Slava/label-tool Web application for image labeling and segmentation	49	Emerging	352	JavaScript
18	cloud-annotations/cloud-annotations 🐝 A fast, easy and collaborative open source image annotation tool for teams...	49	Emerging	2,688	TypeScript
19	zenml-io/awesome-open-data-annotation Open Source Data Annotation & Labeling Tools	48	Emerging	686	—
20	Geocene/trainset A lightweight web application for brushing labels onto time series data;...	47	Emerging	181	JavaScript
21	CertifaiAI/classifai :fire: One of the most comprehensive open-source data annotation platform.	46	Emerging	125	Java
22	sweppner/labeld LabelD is a quick and easy-to-use image annotation tool, built for...	46	Emerging	132	JavaScript
23	UniversalDataTool/universal-data-tool Collaborate & label any type of data, images, text, or documents, in an easy...	46	Emerging	2,058	JavaScript
24	HazyResearch/reef Automatically labeling training data	45	Emerging	108	Jupyter Notebook
25	DS2BRAIN/ds2 Easiest way to use AI models without coding (Web UI & API support)	44	Emerging	50	Python
26	decile-team/spear SPEAR: Programmatically label and build training data quickly.	44	Emerging	109	Jupyter Notebook
27	DD-DuDa/LabelTrack LabelTrack是一个针对于多目标跟踪的图形化自动标注平台	43	Emerging	96	Python
28	vmware-archive/data-annotator-for-machine-learning Data annotator for machine learning allows you to centrally create, manage...	43	Emerging	61	TypeScript
29	HumanSignal/label-studio-plugins Plugins to extend Label Studio with custom workflows, integrations, and UI...	43	Emerging	4	JavaScript
30	dl-cv/labelme-ai 深度视觉LabelmeAI是一款基于LabelMe开源版进行深度重开发的更加智能的标注工具。	42	Emerging	26	Python
31	aralroca/etiketai Etiketai is an online tool designed to label images, useful for training AI models	41	Emerging	78	JavaScript
32	open-edge-platform/annflux A research tool for exploring and annotating large datasets with Active Learning	41	Emerging	14	Python
33	smrfeld/dash-annotate-cv Dash components for computer vision annotation tasks	41	Emerging	12	Python
34	CrowdTruth/CrowdTruth-core CrowdTruth framework for crowdsourcing ground truth for training &...	40	Emerging	64	Jupyter Notebook
35	encord-team/encord-active The toolkit to test, validate, and evaluate your models and surface, curate,...	39	Emerging	456	Python
36	slrbl/human-in-the-loop-machine-learning-tool-tornado Tornado is an open source Human-in-the-loop machine learning tool. It helps...	39	Emerging	68	Ruby
37	HumanSignal/awesome-data-labeling A curated list of awesome data labeling tools	39	Emerging	4,290	—
38	jveitchmichaelis/deeplabel A cross-platform desktop image annotation tool for machine learning	38	Emerging	213	C++
39	BMW-InnovationLab/BMW-Labeltool-Lite This repository provides you with an easy-to-use labeling tool for...	38	Emerging	324	C#
40	CyberAgent/fast-annotation-tool FAST is an annotation tool that focuses on mobile devices....	37	Emerging	53	TypeScript
41	kinhong/OpenLabeler OpenLabeler is an open source desktop application for annotating objects for...	37	Emerging	126	Java
42	tryolabs/taggerine Annotation tool for images	36	Emerging	63	JavaScript
43	urobots-io/anno Cross-platform image labeling tool for AI	36	Emerging	14	C++
44	steven22tom/LabelSlide LabelSlide is a slide annotation tool and label object bounding boxes in...	35	Emerging	16	JavaScript
45	roboflow/auto-annotate A simple tool for automatic image annotation using Roboflow API	34	Emerging	47	Python
46	modzy/modzy-labelstudio-sample Create training data labels from a production model with Modzy, Dropbox, and...	34	Emerging	18	Python
47	ies-research/multi-annotator-machine-learning Training with Data Annotated by Multipe Error-prone Annotators	34	Emerging	12	Python
48	Jiramew/image_labeling_for_machine_learning Image Labeling Tool For Machine Learning	33	Emerging	8	JavaScript
49	Mirobit/Labelit :book: Anonymize and annotate text	33	Emerging	7	JavaScript
50	donlapark/XLabel XLabel: An Explainable Data Labeling Assistant	33	Emerging	7	Jupyter Notebook
51	tkp-archive/nannotate Automate ML dataset labelling	33	Emerging	11	JavaScript
52	03axdov/Dalinar A Machine Learning website for data labeling and model creation. Currently...	32	Emerging	2	JavaScript
53	MahdiAhmadnejad/Image-Labeler-android An App For Labeling Images to Train AI Models	32	Emerging	4	Kotlin
54	OmerMersin/SLabel Fast labeling application with automatic labeling, thanks to the help of a...	32	Emerging	5	Python
55	shamspias/VideoLabelMagic Automate video data creation. Extract frames, generate annotations, export...	32	Emerging	4	Python
56	windj007/docato DOCument lAbeling TOol - a simple web-based appearance-aware tool to label...	31	Emerging	4	JavaScript
57	dataqa/jupyter-annotate Interactive Text Annotation for Jupyter Notebook/Lab	31	Emerging	16	TypeScript
58	ismailuddin/iris 🖥 Web platform for easy labelling and management of 🏞 image data labelling	30	Emerging	2	JavaScript
59	LukasBommes/Grid-Annotation-Tool Annotation Tool for Instance Segmentation of Grid Structures (deprecated in...	30	Emerging	6	HTML
60	thekevinscott/image-labeler Autosuggested labels for images and video	30	Emerging	2	TypeScript
61	SSusantAchary/Data-Annotator-for-SpaCy 🚀SpAnnor annotator for Named Entity Recognition easy to use tool. The...	29	Experimental	7	HTML
62	vvincenttttt/Awesome-3D-AutoLabeling-tools Papers, code and datasets about deep learning data auto-labeling.	29	Experimental	39	—
63	gibbona1/neal NEAL (Nature+Energy Audio Labeller) is an open-source interactive audio data...	27	Experimental	18	R
64	znck/annotate Open Image Annotation Tool	27	Experimental	8	JavaScript
65	Labellerr/deeplearning Labellerr is a One Stop Automated AI training and Data Annotation SAAS...	27	Experimental	7	Jupyter Notebook
66	t9nzin/datascale ai-assisted dataset annotation platform, fully on your tailnet	26	Experimental	1	JavaScript
67	ZackAkil/friendlier-data-labelling Code resources for generating a google form for labelling data.	26	Experimental	7	JavaScript
68	krishsharma0413/tinder-for-reviews Labeling dataset like 🔥Tinder.	26	Experimental	21	CSS
69	mctrinh/awesome-labeling-tools A curated list of excellent tools for data labeling and annotation across...	25	Experimental	13	—
70	sohaib023/T-Truth Labeling tool for Table Structures in Document Images.	25	Experimental	3	Java
71	eschuler23/labellingsoftware Flexible image labeling software for machine learning workflows. Design...	24	Experimental	1	TypeScript
72	diffgram/awesome-training-data Curated list of Awesome Training Data! (Data Labeling, Annotation,...	24	Experimental	12	—
73	jankozik/QuickAnnotationTool Annotate quickly images.	23	Experimental	25	C++
74	raynardj/langhuan Light weight labeling engine	22	Experimental	13	Jupyter Notebook
75	pixano/pixano.github.io Documentation website for Pixano	22	Experimental	—	Python
76	masakiaota/Layered-Span-Studio 文字列の任意区間に対して、重なり合う複数ラベルを同時に管理する作業に最適化されたアノテーションツール	22	Experimental	—	TypeScript
77	matlab-deep-learning/Automate-Labeling-in-Image-Labeler-using-a-Pretrained-TensorFlow-Object-Detector This example shows how to automate object labeling in the Image Labeler app...	21	Experimental	14	MATLAB
78	UMassCDS/inatator Annotation tool for marking and storing species ranges on maps, created in...	20	Experimental	6	JavaScript
79	semihyagli/STL10-Labeled This repository contains complete labels for all the images in the SLT10...	19	Experimental	1	Jupyter Notebook
80	mailcorahul/auto_labeler auto_labeler - An all-in-one library to automatically label vision data	19	Experimental	19	Python
81	ledinhtri97/DataAnnotationTool Data Annotation Tool	18	Experimental	2	JavaScript
82	KuchikiRenji/auto_labeler Python library for automatic CV dataset labeling - classification,...	18	Experimental	3	Python
83	NickSettler/video-annotation-tool Tool for annotating videos for machine learning workflows	18	Experimental	2	TypeScript
84	chriamue/image-label-tool Create bounding boxes around objects in an image and classify them according...	17	Experimental	1	Rust
85	aadityabhusal/LabelUp A video annotator for generating machine learning datasets	17	Experimental	1	JavaScript
86	nattui/olabel WOP: ⭕ OLabel (Open Label) is an image classification browser extension to...	15	Experimental	5	JavaScript
87	Asad-Ismail/InteractiveAnnotation Interactive Annotation using Segment Anything for fast and accurate segmentation	14	Experimental	22	Jupyter Notebook
88	Sparky1C/AnacomAPI Annotation, Labelling and Analysation API	13	Experimental	—	Python
89	saeedseyfi/imagerner Images machine learning helper	13	Experimental	2	JavaScript
90	Chris-Morneo/data-annotation-samples Mock data annotation and evaluation tasks created to demonstrate attention...	13	Experimental	—	—
91	mboultoureau/ontolearn-annotator Crowdsourcing platform compatible with active learning.	13	Experimental	—	TypeScript
92	acarl005/label-gun A Chrome extension to help downloading and labelling images for machine learning	12	Experimental	6	JavaScript
93	jakarto3d/jakarnotator The Jakarnotator is an annotation tool to create your own database for...	12	Experimental	7	JavaScript
94	eisneim/dl_annotator a chrome extension to annotate web images, annotated data is saved as a...	12	Experimental	7	JavaScript
95	abdulmoiz2k04/AI-Object-Annotator An AI-powered image annotation tool that detects objects and allows users to...	11	Experimental	—	Python
96	Trusted-AI-Labs/ALAMBIC Django framework for active learning tasks	11	Experimental	—	JavaScript
97	imankarimi/image-labeling This desktop application, built with Python using the Tkinter package,...	11	Experimental	—	Python
98	ywu666/Collaborative-data-labelling This project developed a web-based software application for multiple...	11	Experimental	—	TypeScript
99	anesmacic/labeler Tool for annotating / labelling images for ML pipelines.	11	Experimental	—	TypeScript
100	CoreLabsAI/datalabel datalabel is a UI-based data editing tool that makes it easy to create...	11	Experimental	3	HTML

Comparisons in this category

label-studio and labelImg (78 vs 51) labelme and labelImg (73 vs 51) label-studio and X-AnyLabeling (78 vs 72) label-studio and awesome-open-data-annotation (78 vs 48) label-studio and label-tool (78 vs 49) label-studio and annotate-lab (78 vs 56) labelme and label-tool (73 vs 49) labelme and annotate-lab (73 vs 56) X-AnyLabeling and autodistill (72 vs 56) X-AnyLabeling and awesome-open-data-annotation (72 vs 48)