Labelling and annotation
Human annotation: bounding boxes, spans, classifications and the review workflow around them. Generating examples rather than marking them up is synthetic data.
38 in this category
NARROW BY WHAT THIS CATEGORY ASKS
ANNOTATION TYPES · 6 NOT READ
LICENCE · 8 NOT READ
OPEN SOURCE · 26 NOT READ
PRODUCTUSED BYSTARSDOWNLOADS 30D
label-studioLabel Studio is a multi-type data labeling and annotation tool with standardized output format28,251
cvatComputer Vision Annotation Tool (CVAT) is a leading platform for building high-quality visual datasets for vision AI. It offers open-source, cloud, and enterprise products, as well as labeling service16,690
cleanlabCleanlab's open-source library is the standard data-centric AI package for data quality and machine learning with messy, real-world data and labels.11,650
doccanoOpen source annotation tool for machine learning practitioners.10,768XX-AnyLabelingX-AnyLabeling: A lightweight, efficient, and unified cross-platform desktop application for annotating text, image, video, and multimodal data, combining versatile built-in tools with state-of-the-art10,411
argillaArgilla is a collaboration tool for AI engineers and domain experts to build high-quality datasets5,105
LightlyA python library for self-supervised learning on images.3,806
anylabelingEffortless AI-assisted data labeling with AI support from YOLO, Segment Anything (SAM+SAM2/2.1+SAM3), MobileSAM!!3,469
ksnipksnip the cross-platform screenshot and annotation tool3,318
kubricA data generation pipeline for creating semi-realistic synthetic multi-object videos with rich annotations such as instance segmentation masks, depth maps, and optical flow.2,816Iisat_with_segment_anythingLabeling tool with SAM(segment anything model),supports SAM, SAM2, SAM3, sam-hq, MobileSAM EdgeSAM etc.交互式半自动图像标注工具2,175
diffgramThe AI Datastore for Schemas, BLOBs, and Predictions. Use with your apps or integrate built-in Human Supervision, Data Workflow, and UI Catalog to get the most value out of your AI Data.1,909
fastdupfastdup is a powerful, free tool designed to rapidly generate valuable insights from image and video datasets. It helps enhance the quality of both images and labels, while significantly reducing data1,908Ggromit-mpxGromit-MPX is an on-screen annotation tool that works with any Unix desktop environment under X11 as well as XWayland.1,393
BasicAIXtreme1 is an all-in-one data labeling and annotation platform for multimodal data training and supports 3D LiDAR point cloud, image, and LLM.1,268
audinoOpen source audio annotation tool for humans1,147DdrawpenDrawPen is a simple screen annotation. Available on macOS, Windows & Linux.1,026
expressive-codeA text marking & annotation engine for presenting source code on the web.965
dokieli:bulb: dokieli is a clientside editor for decentralised article publishing, annotations and social interactions893
annotoriousAdd image annotation functionality to any web page with a few lines of JavaScript.867
inceptionINCEpTION provides a semantic annotation platform offering intelligent annotation assistance and knowledge management.714
LOSTLabel Objects and Save Time (LOST) - Design your own smart Image Annotation process in a web-based environment.580
RectLabelRectLabel is an offline image annotation tool for object detection and segmentation.552
PPOCRLabelPPOCRLabelv3 is a semi-automatic graphic annotation tool suitable for OCR field, with built-in PP-OCR model to automatically detect and re-recognize data.446
Potatopotato: the portable annotation tool421Bbbox-visualizerMake drawing and labeling bounding boxes a piece of cake411
binarykits.zplBinaryKits.Zpl a set of .net libraries. The project supports you in the simple creation of zebra labels. It generates the ZPL data, it is a printer description language from Zebra Technologies. ZPL II410GgwGenome browser and variant annotation399Aannotate📝 Annotation tool for macOS374
dramDistilled and Refined Annotation of Metabolism: A tool for the annotation and curation of function for microbial and viral genomes341Hhover:speedboat: Label data at scale. Fun and precision included.330Ccanvas-select一个轻量级图片标注javascript库，支持矩形、多边形、点、折线、圆形、画笔，支持再编辑，图像标注更简单。317
geckoGecko - A Tool for Effective Annotation of Human Conversations308
artemisArtemis is a free genome viewer and annotation tool that allows visualization of sequence features and the results of analyses within the context of the sequence, and its six-frame translation269
annifAnnif is a multi-algorithm automated subject indexing tool for libraries, archives and museums.268CclapshotSelf hosted web based collaborative video review tool267BbfscanTool for finding URLs, paths, secrets and generating raw HTTP requests and OpenApi specifications from config files and annotations used in JAR / WAR / APK applications.256
crowd-kitControl the quality of your labeled data with the Python tools you already know.254SORTED BY ONE STATED COLUMN · USED BY = LISTED PRODUCTS DEPENDING ON IT, IN THIS DIRECTORY — NOT A POPULARITY FIGURE · NO OVERALL SCORE AND NO RANK COLUMN, BECAUSE BLENDING ADOPTION, STARS AND DOWNLOADS NEEDS WEIGHTS, AND WEIGHTS ARE AN OPINION PRESENTED AS ARITHMETIC
Cite this page
The count and its date sit inside the citation, because “Labelling and annotation” without a date is a claim that quietly goes wrong as the category fills.
infratoapp, “Labelling and annotation — Data / RAG”, read 27 October 2026. 38 listed products. https://www.infratoapp.com/layers/data-rag/labelling
No overall score, and no rank column
Blending adoption, stars and downloads needs weights, and weights are an opinion presented as arithmetic — so this table sorts by one stated column at a time and shows which. This view holds no billing column and joins no billing table: a sponsor cannot appear higher, and the signals meter is a row’s own confidence, never a score you can sort on.
Frequently asked
What is in the Labelling and annotation category?
38 products in the Data / RAG layer of the AI stack. Human annotation: bounding boxes, spans, classifications and the review workflow around them. Generating examples rather than marking them up is synthetic data. Listed members include label-studio, cvat and cleanlab. Every fact on each listing carries the page it was read from and the date it was read.
How are Labelling and annotation compared here?
By the 6 attributes this category declares, asked of every member and answered only where a source states it. A product with no answer on record shows a gap rather than a guess, and no blended score is published — weights would be an opinion presented as arithmetic.
label-studio or cvat?
Both are listed under Labelling and annotation. We publish no verdict between them — we hold no benchmark that would support one. What we do hold is the same attribute sheet for each, side by side with the source behind every value, at /compare/cvat-vs-label-studio.
What does a blank mean on a labelling and annotation row?
That nobody has told us, not that the answer is no. A hollow ring is "no answer on record", which is a different state from a recorded no — and the two look different on purpose. A listing with a blank has not failed the question; it has not been read for it.
How often are labelling and annotation figures re-read?
Every value carries the date it was read and a link to the page it came from. Prices move fastest and are re-read most often; an attribute read weeks ago says so rather than presenting itself as current. Anything past 21 days is hidden rather than shown stale.
Is this every labelling and annotation there is?
No. This is 38 we have read and can cite. A directory that claimed completeness would be making a promise it cannot keep, so the page states its own count instead and says when a category is too thin to shortlist from.
Can a vendor pay to rank higher here?
No. Nothing on this page can be bought: a sponsor cannot enter a table, reorder a row or change a mark, and there is no ranked position for sale. How the site is paid for, and the line each source of money does not cross, is set out under money and independence at /our-data#sec5.