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 101 data annotation tools frameworks tracked. 5 score above 70 (verified tier). The highest-rated is cvat-ai/cvat at 96/100 with 15,452 stars and 98,931 monthly downloads. 4 of the top 10 are actively maintained.

Get all 101 projects as JSON

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#	Framework	Score	Tier	Stars	Language
1	cvat-ai/cvat Annotate better with CVAT, the industry-leading data engine for machine...	96	Verified	15,452	Python
2	HumanSignal/label-studio Label Studio is a multi-type data labeling and annotation tool with...	91	Verified	26,703	TypeScript
3	CVHub520/X-AnyLabeling Effortless data labeling with AI support from Segment Anything and other...	82	Verified	8,375	Python
4	wkentaro/labelme Image annotation with Python. Supports polygon, rectangle, circle, line,...	76	Verified	15,641	Python
5	doccano/doccano Open source annotation tool for machine learning practitioners.	72	Verified	10,571	Python
6	autodistill/autodistill Images to inference with no labeling (use foundation models to train...	65	Established	2,644	Python
7	snorkel-team/snorkel A system for quickly generating training data with weak supervision	58	Established	5,940	Python
8	phurwicz/hover :speedboat: Label data at scale. Fun and precision included.	58	Established	331	Python
9	virajmavani/semi-auto-image-annotation-tool Anno-Mage: A Semi Automatic Image Annotation Tool which helps you in...	54	Established	590	Python
10	PaddleCV-SIG/PaddleLabel 飞桨智能标注，让标注快人一步	52	Established	294	Python
11	l3p-cv/lost Label Objects and Save Time (LOST) - Design your own smart Image Annotation...	52	Established	577	Python
12	sumn2u/annotate-lab Annotate-lab is an open-source image annotation tool for efficient dataset...	52	Established	125	JavaScript
13	HumanSignal/labelImg LabelImg is now part of the Label Studio community. The popular image...	51	Established	24,849	Python
14	cloud-annotations/cloud-annotations 🐝 A fast, easy and collaborative open source image annotation tool for teams...	49	Emerging	2,688	TypeScript
15	explosion/jupyterlab-prodigy 🧬 A JupyterLab extension for annotating data with Prodigy	48	Emerging	189	TypeScript
16	pixano/pixano Data-centric AI building blocks for computer vision applications	48	Emerging	55	Python
17	wikimedia/wikilabels A generalized labeling service for MediaWiki	46	Emerging	29	JavaScript
18	Slava/label-tool Web application for image labeling and segmentation	42	Emerging	352	JavaScript
19	zenml-io/awesome-open-data-annotation Open Source Data Annotation & Labeling Tools	41	Emerging	686	—
20	Geocene/trainset A lightweight web application for brushing labels onto time series data;...	40	Emerging	181	JavaScript
21	UniversalDataTool/universal-data-tool Collaborate & label any type of data, images, text, or documents, in an easy...	39	Emerging	2,058	JavaScript
22	CertifaiAI/classifai :fire: One of the most comprehensive open-source data annotation platform.	39	Emerging	125	Java
23	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。	39	Emerging	26	Python
24	sweppner/labeld LabelD is a quick and easy-to-use image annotation tool, built for...	39	Emerging	132	JavaScript
25	HumanSignal/awesome-data-labeling A curated list of awesome data labeling tools	39	Emerging	4,290	—
26	HazyResearch/reef Automatically labeling training data	38	Emerging	108	Jupyter Notebook
27	smrfeld/dash-annotate-cv Dash components for computer vision annotation tasks	38	Emerging	12	Python
28	decile-team/spear SPEAR: Programmatically label and build training data quickly.	37	Emerging	109	Jupyter Notebook
29	DS2BRAIN/ds2 Easiest way to use AI models without coding (Web UI & API support)	37	Emerging	50	Python
30	HumanSignal/label-studio-plugins Plugins to extend Label Studio with custom workflows, integrations, and UI...	36	Emerging	4	JavaScript
31	vmware-archive/data-annotator-for-machine-learning Data annotator for machine learning allows you to centrally create, manage...	36	Emerging	61	TypeScript
32	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	36	Emerging	96	Python
33	nishantnnb/spectrolipi A tool designed to manage annotations for bioacoustics.	35	Emerging	1	JavaScript
34	open-edge-platform/annflux A research tool for exploring and annotating large datasets with Active Learning	35	Emerging	14	Python
35	aralroca/etiketai Etiketai is an online tool designed to label images, useful for training AI models	34	Emerging	78	JavaScript
36	CrowdTruth/CrowdTruth-core CrowdTruth framework for crowdsourcing ground truth for training &...	33	Emerging	64	Jupyter Notebook
37	ecker-lab/SiLVi SiLVi: Simple Interface for Labeling Video Interactions	33	Emerging	2	JavaScript
38	slrbl/human-in-the-loop-machine-learning-tool-tornado Tornado is an open source Human-in-the-loop machine learning tool. It helps...	32	Emerging	68	Ruby
39	encord-team/encord-active The toolkit to test, validate, and evaluate your models and surface, curate,...	32	Emerging	456	Python
40	BMW-InnovationLab/BMW-Labeltool-Lite This repository provides you with an easy-to-use labeling tool for...	31	Emerging	324	C#
41	jveitchmichaelis/deeplabel A cross-platform desktop image annotation tool for machine learning	31	Emerging	213	C++
42	kinhong/OpenLabeler OpenLabeler is an open source desktop application for annotating objects for...	30	Emerging	126	Java
43	CyberAgent/fast-annotation-tool FAST is an annotation tool that focuses on mobile devices....	30	Emerging	53	TypeScript
44	urobots-io/anno Cross-platform image labeling tool for AI	29	Experimental	14	C++
45	tryolabs/taggerine Annotation tool for images	29	Experimental	63	JavaScript
46	steven22tom/LabelSlide LabelSlide is a slide annotation tool and label object bounding boxes in...	28	Experimental	16	JavaScript
47	t9nzin/datascale ai-assisted dataset annotation platform, fully on your tailnet	27	Experimental	1	JavaScript
48	ies-research/multi-annotator-machine-learning Training with Data Annotated by Multipe Error-prone Annotators	27	Experimental	12	Python
49	modzy/modzy-labelstudio-sample Create training data labels from a production model with Modzy, Dropbox, and...	27	Experimental	18	Python
50	roboflow/auto-annotate A simple tool for automatic image annotation using Roboflow API	27	Experimental	47	Python
51	donlapark/XLabel XLabel: An Explainable Data Labeling Assistant	26	Experimental	7	Jupyter Notebook
52	tkp-archive/nannotate Automate ML dataset labelling	26	Experimental	11	JavaScript
53	Jiramew/image_labeling_for_machine_learning Image Labeling Tool For Machine Learning	26	Experimental	8	JavaScript
54	Mirobit/Labelit :book: Anonymize and annotate text	26	Experimental	7	JavaScript
55	hugocastp/FLAT-TextTagger Web tool that allows the identification and labeling of entities of...	25	Experimental	5	JavaScript
56	MahdiAhmadnejad/Image-Labeler-android An App For Labeling Images to Train AI Models	25	Experimental	4	Kotlin
57	OmerMersin/SLabel Fast labeling application with automatic labeling, thanks to the help of a...	25	Experimental	5	Python
58	lucasxlu/CbirAnnoTool Online Web-based Annotation Toolkit for Image Retrieval/ReID/Face Recognition Tasks	25	Experimental	5	JavaScript
59	shamspias/VideoLabelMagic Automate video data creation. Extract frames, generate annotations, export...	25	Experimental	4	Python
60	03axdov/Dalinar A Machine Learning website for data labeling and model creation. Currently...	25	Experimental	2	JavaScript
61	windj007/docato DOCument lAbeling TOol - a simple web-based appearance-aware tool to label...	24	Experimental	4	JavaScript
62	dataqa/jupyter-annotate Interactive Text Annotation for Jupyter Notebook/Lab	24	Experimental	16	TypeScript
63	ismailuddin/iris 🖥 Web platform for easy labelling and management of 🏞 image data labelling	23	Experimental	2	JavaScript
64	YugwonWon/KOINA KOINA (Korean Intonation Annotator) is a tool that automatically annotates...	23	Experimental	6	Python
65	LukasBommes/Grid-Annotation-Tool Annotation Tool for Instance Segmentation of Grid Structures (deprecated in...	23	Experimental	6	HTML
66	thekevinscott/image-labeler Autosuggested labels for images and video	23	Experimental	2	TypeScript
67	vvincenttttt/Awesome-3D-AutoLabeling-tools Papers, code and datasets about deep learning data auto-labeling.	22	Experimental	39	—
68	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
69	pixano/pixano.github.io Documentation website for Pixano	22	Experimental	—	Python
70	gibbona1/neal NEAL (Nature+Energy Audio Labeller) is an open-source interactive audio data...	22	Experimental	18	R
71	SSusantAchary/Data-Annotator-for-SpaCy 🚀SpAnnor annotator for Named Entity Recognition easy to use tool. The...	22	Experimental	7	HTML
72	lstachowicz/PolySeg Interactive polygon annotation tool built with Qt6 for creating AI training datasets	21	Experimental	2	C++
73	raynardj/langhuan Light weight labeling engine	20	Experimental	13	Jupyter Notebook
74	znck/annotate Open Image Annotation Tool	20	Experimental	8	JavaScript
75	Labellerr/deeplearning Labellerr is a One Stop Automated AI training and Data Annotation SAAS...	20	Experimental	7	Jupyter Notebook
76	tom-zak/spektra-vision Image annotation platform for object detection and segmentation	20	Experimental	1	TypeScript
77	eschuler23/labellingsoftware Flexible image labeling software for machine learning workflows. Design...	20	Experimental	1	TypeScript
78	mctrinh/awesome-labeling-tools A curated list of excellent tools for data labeling and annotation across...	19	Experimental	13	—
79	NihalJani/react-picture-annotate A simple and powerful React component for creating, editing, and managing...	19	Experimental	—	TypeScript
80	krishsharma0413/tinder-for-reviews Labeling dataset like 🔥Tinder.	19	Experimental	21	CSS
81	ZackAkil/friendlier-data-labelling Code resources for generating a google form for labelling data.	19	Experimental	7	JavaScript
82	sohaib023/T-Truth Labeling tool for Table Structures in Document Images.	18	Experimental	3	Java
83	diffgram/awesome-training-data Curated list of Awesome Training Data! (Data Labeling, Annotation,...	17	Experimental	12	—
84	jankozik/QuickAnnotationTool Annotate quickly images.	16	Experimental	25	C++
85	danvc/remo Platform for Image Labeling and Annotation Open Computer Vision	15	Experimental	6	JavaScript
86	ossner/SegmentationLab Interactive tool to visualize and evaluate image segmentation metrics like...	14	Experimental	—	TypeScript
87	KuchikiRenji/auto_labeler Python library for automatic CV dataset labeling - classification,...	14	Experimental	3	Python
88	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...	14	Experimental	14	MATLAB
89	UMassCDS/inatator Annotation tool for marking and storing species ranges on maps, created in...	13	Experimental	6	JavaScript
90	jiankaiwang/vott This tool provides end to end support for generating datasets and validating...	13	Experimental	5	JavaScript
91	nattui/olabel WOP: ⭕ OLabel (Open Label) is an image classification browser extension to...	13	Experimental	5	JavaScript
92	mailcorahul/auto_labeler auto_labeler - An all-in-one library to automatically label vision data	12	Experimental	19	Python
93	semihyagli/STL10-Labeled This repository contains complete labels for all the images in the SLT10...	12	Experimental	1	Jupyter Notebook
94	ledinhtri97/DataAnnotationTool Data Annotation Tool	11	Experimental	2	JavaScript
95	Sparky1C/AnacomAPI Annotation, Labelling and Analysation API	11	Experimental	—	Python
96	Chris-Morneo/data-annotation-samples Mock data annotation and evaluation tasks created to demonstrate attention...	11	Experimental	—	—
97	mboultoureau/ontolearn-annotator Crowdsourcing platform compatible with active learning.	11	Experimental	—	TypeScript
98	saeedseyfi/imagerner Images machine learning helper	11	Experimental	2	JavaScript
99	NickSettler/video-annotation-tool Tool for annotating videos for machine learning workflows	11	Experimental	2	TypeScript
100	chriamue/image-label-tool Create bounding boxes around objects in an image and classify them according...	10	Experimental	1	Rust
101	aadityabhusal/LabelUp A video annotator for generating machine learning datasets	10	Experimental	1	JavaScript

Comparisons in this category

label-studio and labelImg (91 vs 51) labelme and labelImg (76 vs 51) label-studio and X-AnyLabeling (91 vs 82) label-studio and awesome-open-data-annotation (91 vs 41) label-studio and label-tool (91 vs 42) label-studio and annotate-lab (91 vs 52) labelme and label-tool (76 vs 42) labelme and annotate-lab (76 vs 52) doccano and awesome-open-data-annotation (72 vs 41) X-AnyLabeling and autodistill (82 vs 65)