Alternatives to Annotator
Compare Annotator alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Annotator in 2026. Compare features, ratings, user reviews, pricing, and more from Annotator competitors and alternatives in order to make an informed decision for your business.
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Ango Hub
iMerit
Ango Hub is a quality-focused, enterprise-ready data annotation platform for AI teams, available on cloud and on-premise. It supports computer vision, medical imaging, NLP, audio, video, and 3D point cloud annotation, powering use cases from autonomous driving and robotics to healthcare AI. Built for AI fine-tuning, RLHF, LLM evaluation, and human-in-the-loop workflows, Ango Hub boosts throughput with automation, model-assisted pre-labeling, and customizable QA while maintaining accuracy. Features include centralized instructions, review pipelines, issue tracking, and consensus across up to 30 annotators. With nearly twenty labeling tools—such as rotated bounding boxes, label relations, nested conditional questions, and table-based labeling—it supports both simple and complex projects. It also enables annotation pipelines for chain-of-thought reasoning and next-gen LLM training and enterprise-grade security with HIPAA compliance, SOC 2 certification, and role-based access controls. -
2
Scalabel
Scalabel
Support various types of annotations on both images and videos. A scalable open-source web annotation tool. Support simple “click and drag” actions and options to add multiple attributes. Feature functions to fit boundaries with Bezier curves and copy shared boundaries. Annotate the area that the driver is currently driving on. Annotate lane marking for vision-based vehicle localization and trajectory planing. Accurate and intuitive four-click method to encapsulate objects of interest. Predict annotations between frames using object tracking and interpolation algorithm for bounding boxes. Annotation predictions for object instances. 2D tracking features extended to 3D.Starting Price: Free -
3
Anolytics
Anolytics
Anolytics provides data annotation service for image, videos & text for machine learning and AI-based computer vision. Anolytics offers a low-cost annotation service for machine learning and artificial intelligence model developments. It is providing the precisely annotated data in the form of text, images and videos using the various annotation techniques while ensuring the accuracy and quality. It is specialized in Image Annotation, Video Annotation and Text Annotation with best accuracy. Anolytics is providing all leading types of data annotation service used as a data training in machine learning and deep learning. It offers Bounding Boxes, Semantic Segmentation, 3D Point Cloud Annotation and 3D Cuboid Annotation for fields like healthcare, autonomous driving or drone falying, retail, security surveillance and agriculture. Anolytics works with scalable solution, available at turnaround time and cost-effective pricing for clients across the globe. -
4
Sumnotes
Fifth Force
An online PDF and Kindle annotation management tool that saves you hours of gruesome work. Have your PDF and Kindle annotations available for you to download in various formats in a matter of seconds. We summarize annotations from your PDFs, Kindle books and Instapaper articles. Save yourself a headache of searching for a tool to annotate and extract annotations from your books or PDF material. Sumnotes is the only simple, yet robust solution to extract annotations from PDF books, lecture notes or research papers, helping you to focus on what matters to you. With one click, import and synchronize annotations made across various platforms. With our batch import capability, importing your entire library is a breeze. We support PDF documents annotated in any official PDF software, including Adobe products and Preview on Macs. We also excited to announce that we support Kindle highlights! -
5
BasicAI
BasicAI
Our cloud-based annotation platform helps you to create projects, annotate, monitor progress and download annotation results. Your tasks can be assigned either to our managed annotation team or to our global crowd. -
6
Keylabs
Keylabs
Keylabs.ai is an advanced image and video annotation platform designed by experts to provide high-performance data annotation, management features, and unique operations management capabilities. With a proven track record of handling large datasets efficiently and accurately, Keylabs.ai is trusted by global technology leaders. It combines innovative technology with a user-centric design to support projects of any type and scale. The platform supports various image and video annotation dataset formats, including semantic segmentation, cuboid 3D point cloud, polygons, key points, lane annotation, and bitmask. Additionally, Keylabs.ai allows seamless integration of client models to meet specific project requirements. The annotation process is enhanced with exclusive post-annotation tools like Edge Smooth and Healer, ensuring greater precision and efficiency. By simplifying image annotation, Keylabs.ai provides AI developers with a high degree of flexibility to optimize workflow.Starting Price: $1/hour -
7
Hasty
Hasty
The Hasty platform provides everything needed to go from raw images and videos to production-ready models. The Hasty platform is helping world-class organizations deliver AI to production. The idea behind Hasty's annotation solution is simple. You annotate images, and we use the annotations to train AI models making it faster to create more annotations. This continuously improving approach ensures that you build your data asset faster than ever before. With AI consensus scoring, no complex review workflows or expensive redundancies are needed. We use AI to find potential errors, which can then be fixed at the click of a button. With the model playground, the platform enables the quick creation of models, tuning them to the smallest parameter and deploying them in our data annotation environment to enable unparalleled annotation speed. The models can also be exported and deployed in your own environment. -
8
Klatch
Klatch Technologies
Klatch Technologies is a global data services provider helping companies and institutions collect, annotate, and process data. We assist Artificial Intelligence companies, research institutions, Machine Learning or Computer Vision projects in data labeling, data collection, content moderation, and other data projects. Our Specialists provide rapid scalability, precise accuracy, swift turnaround time, multilingual capability, and data security at a low-cost. - Data Annotation Services: Image Annotation Video Annotation Search Relevance Text NLP Annotation Text Classification Sentiment Analysis Image Segmentation LIDAR Annotation - Data Collection Services: Healthcare Training Data Chatbot Training Data & all other data collection needs - IT Managed Services: Content Moderation Ecommerce Data Categorization -
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LabelMe
LabelMe
The goal of LabelMe is to provide an online annotation tool to build image databases for computer vision research. You can contribute to the database by visiting the annotation tool. Organization of images into collections: You can organize the images into collections. You can also create collections inside collections just as you would do with folders. When you download your database, the collections will be organized into folders. Uploading and image annotation: You can upload images into your collections and annotate your images using the online LabelMe annotation tool. Unlisted collections are ones that anyone can view if they have access to the URL, but will not be displayed in the set of public folders. As the goal of LabelMe is to provide a tool for research, the images and annotations are expected to become available to the research comunity without restrictions. -
10
iAnnotate
Folia
Annotating while you read is a powerful way to process and retain information. iAnnotate features the most comprehensive set of tools so you can highlight, draw, stamp, underline, and more with the touch of a finger. Whether you keep them on-device or in the cloud (Google Drive, OneDrive, Dropbox, and more) iAnnotate helps you access all the files you need. Microsoft Office files, Google Docs, images, no problem! iAnnotate automatically converts files to PDF to keep you productive! You need to share different things for different audiences, and we get that! iAnnotate gives users granular control over what you share, and who you share it with. Share your work, your way. Juggle multiple documents, rapidly switch between tools, mark it up, and send it back to your boss faster than you can say, “Have this on my desk by 5!” Our annotations follow the PDF standard, so other full-featured PDF applications will let you see and work with annotations created in iAnnotate. -
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SuperAnnotate
SuperAnnotate
SuperAnnotate is the world's leading platform for building the highest quality training datasets for computer vision and NLP. With advanced tooling and QA, ML and automation features, data curation, robust SDK, offline access, and integrated annotation services, we enable machine learning teams to build incredibly accurate datasets and successful ML pipelines 3-5x faster. By bringing our annotation tool and professional annotators together we've built a unified annotation environment, optimized to provide integrated software and services experience that leads to higher quality data and more efficient data pipelines. -
12
BugSmash
BugSmash
BugSmash is a collaborative feedback and annotation tool designed to streamline the process of reviewing and improving digital assets for design & marketing teams. It allows users to upload, annotate & comment directly on live websites, videos, PDFs, images, audios, and mobile apps. All feedback, progress, and resolutions in one place—no more messy feedback loops, screenshots or scattered communication. Key Features - Multi-Format Support: Review websites, mobile apps, videos, audio files, images, and PDFs—all in one platform. - Centralized Feedback Hub: Collect, manage, and track feedback across different formats, eliminating scattered communication. - Effortless Annotations: Pinpoint issues with direct on-screen annotations—no lengthy explanations needed. - Threaded Feedback & Replies: Keep discussions organized by replying to comments directly, reducing back-and-forth.Starting Price: $99/month -
13
Cogito
Cogito Tech LLC
Cogito Tech is a leading AI data solutions provider specializing in data labeling and annotation services. We deliver high-quality data for applications across computer vision, natural language processing (NLP), and content services. Our expertise extends to fine-tuning large language models (LLMs) through techniques like Reinforcement Learning from Human Feedback (RLHF), enabling rapid deployment and customization to meet business objectives. The company is headquartered in the United States and was featured in The Financial Times’ FT ranking: The Americas’ Fastest-Growing Companies 2025 and Everest Group’s report Data Annotation and Labeling (DAL) Solutions for AI/ML PEAK Matrix® Assessment 2024 Services offered by Cogito: • Image Annotation Service • AI-assisted Data Labeling Service • Medical Image Annotation • NLP & Audio Annotation Service • ADAS Annotation Services • Healthcare Training Data for AI • Audio & Video Transcription ServicesStarting Price: $25/Hour -
14
Sleekshot
Sleekshot
Screenshot & annotation tool designed specifically for Windows 10/11, providing the quickest method to capture screenshots and add annotations. Immediately after taking a screenshot, you can edit it since the editor pops up around the selected area. Featuring a contemporary interface with dark, light, and glass-effect themes, it includes arrows and customizable annotations that you can drag & style. Annotations come with an optional background to ensure readability in any context. It also offers additional handy features like rectangles, lines, and a smooth pen. -
15
Mindkosh
Mindkosh AI
Mindkosh is the data platform for curating, labeling and validating datasets for your AI projects. Our industry leading data annotation platform combines collaborative features with AI-assisted annotation features to provide a comprehensive suite of tools to label any kind of data, be it Images, videos or 3D pointclouds such as those from Lidar. For images, Mindkosh offers semi-automatic segmentation, pre-labeling for bounding boxes and automatic OCR. For videos, automatic interpolation can reduce massive amounts of manual annotation. And for lidar, 1-click annotation allows you to create cuboids in just 1 click! If you are simply looking to get your data labeled, our high quality data annotation services combined with an easy to use Python SDK and web-based review platform, provide an unmatched experience.Starting Price: $30/user/month -
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Dossiere
Dossiere
Dossiere is a highly secure and feature rich electronic solution that provides access to board, executive and confidential papers. Using an unparalleled document security system you can easily view, annotate, share and collaborate on important documents seamlessly. Dossiere makes organising and distributing meeting agendas simple and efficient. Create meetings, agendas and upload documents for your meeting attendees to review and annotate before the meeting begins. Allow your teams to collaborate and share their comments securely with each other. Documents can be bundled and accessed securely for review pre meetings. Dossiere gives you the control over how to consume and collaborate around the documents, videos and audio files that are delivered to your device. View images, video and audio files at the same time that you are reviewing the relevant documents. Create document annotations or timeline annotations in your audio and video files. -
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Labellerr
Labellerr
Labellerr is a data annotation platform designed to expedite the preparation of high-quality labeled datasets for AI and machine learning models. It supports various data types, including images, videos, text, PDFs, and audio, catering to diverse annotation needs. The platform offers automated annotation features, such as model-assisted labeling and active learning, to accelerate the labeling process. Additionally, Labellerr provides advanced analytics and smart quality assurance tools to ensure the accuracy and reliability of annotations. For projects requiring specialized knowledge, Labellerr offers expert-in-the-loop services, including access to professionals in fields like healthcare and automotive. -
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Keymakr
Keymakr
Keymakr specializes in providing image and video data annotation, data creation, data collection, and data validation services for AI/ML Computer Vision projects. With a strong technological foundation and expertise, Keymakr efficiently manages data across various domains. Keymakr's motto, "Human teaching for machine learning," reflects its commitment to the human-in-the-loop approach. The company maintains an in-house team of over 600 highly skilled annotators. Keymakr's goal is to deliver custom datasets that enhance the accuracy and efficiency of ML systems. Our services: - Image annotation - Video annotation - Data validation - Data creation - Data collection - Generative AI - Custom AIStarting Price: $7/hour -
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Kognic
Kognic
Kognic offers an advanced annotation platform specifically designed for sensor-fusion data, aiming to reduce annotation efforts and costs while maintaining high-quality standards. It supports various data labeling needs, from simple static objects to complex scenarios, accommodating 2D/3D objects, 2D instance segmentation, and free space annotations. A key feature is the co-pilot, which leverages imported predictions as prompts for automation, significantly reducing annotation time by up to 68% without compromising quality. This approach enables more efficient human feedback where it's needed most. Kognic also emphasizes refining critical data to enhance AI performance, offering smart sorting based on model confidence and loss metrics, advanced filtering of predicted and annotated objects, and effortless creation of data chunks for targeted review. It is enterprise-ready, and developed for global-scale missions. -
20
PinMy
PinMy
PinMy is an innovative web and mobile application that revolutionizes how we interact with images. It allows users to upload images, photos, PDFs and place interactive Pins on any object or area within them, annotating these pins with either voice or text messages. Ideal for collaborative projects, PinMy enables users to share annotated images via email or shareable links, fostering collaborative annotation. Users can filter comments on pin-threads and receive real-time notifications related to pin activity. The app also features multi-language transcription of voice comments, editing options for image titles and descriptions, and a 'Demo Mode' for showcasing images. This makes PinMy a versatile tool for various professional and personal applications, enhancing visual communication and collaboration.Starting Price: $12 -
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PDF Viewer Pro
PSPDFKit
With PDF Viewer for iPad, iPhone, Mac, and Android, you get annotations, forms, signatures, document editing, and sharing, all in one free package. Whether you're working alone or collaborating with a team, PDF Viewer maximizes productivity, allowing you to easily read, review, annotate, and search PDFs. Your documents should always be at your fingertips. No matter if you're prepping on the way to your next meeting, reviewing a proposal, or reading over the latest offer, our PDF Viewer allows you to view PDFs when it's convenient for you. Annotating your PDF documents by highlighting text, adding notes, freehand ink drawings, images and more is simple and easy with PDF Viewer. When you've finished, easily share or print those documents too. Highlight text, ink drawing, and adding images and notes, are just some of the many annotation types available. Using the annotation inspector, you can quickly adjust the style of your annotations to fit your needs.Starting Price: Free -
22
RedBrick AI
RedBrick AI
RedBrick AI is a Collaborative & Rapid Medical Data Annotation platform. Purpose-built platform to help Healthcare AI teams build high-quality training datasets for all types of radiological imaging, including **CT, MRI, X-ray, Ultrasound, Fluoroscopy, and other standard imaging. Along with native support for medical data formats such as DICOM and NIfTI and can handle complex tasks like multi-series annotation and extensive DICOM studies. Our platform provides the most advanced and user-friendly 2D & 3D web-based annotation tools, with a PACS-like viewer. All common annotation use cases such as instance/semantic segmentation, landmarking, classification, and ROI measurements, are supported to accelerate annotation by up to 60%.Starting Price: $300/month/user -
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BuildVu
IDR Solutions
With BuildVu, you’ll unlock precise PDF-to-HTML/SVG conversion, giving you greater control and added functionality over PDF in your web application. -Optimized Content: BuildVu intelligently converts PDFs, optimizing for smaller file sizes and fast rendering in browsers. -File Metadata: Access PDF data in JSON format, including metadata, word lists, outlines (bookmarks), and annotations. -Thumbnails: Generate high-quality page thumbnails with customizable dimensions. -Annotations: Enjoy support for various annotation types (Links, Popups, Sound/Video, Text, Highlight, Underline) in easy-to-use JSON format. -search.json: Extract all text from the document alongside the HTML content. -Font Conversion: Restructure embedded fonts for compatibility across web browsers. -Office Conversion: Combine BuildVu with LibreOffice for seamless conversion from Office formats (Word, PowerPoint, Excel).Starting Price: $450 per month -
24
Appen
Appen
The Appen platform combines human intelligence from over one million people all over the world with cutting-edge models to create the highest-quality training data for your ML projects. Upload your data to our platform and we provide the annotations, judgments, and labels you need to create accurate ground truth for your models. High-quality data annotation is key for training any AI/ML model successfully. After all, this is how your model learns what judgments it should be making. Our platform combines human intelligence at scale with cutting-edge models to annotate all sorts of raw data, from text, to video, to images, to audio, to create the accurate ground truth needed for your models. Create and launch data annotation jobs easily through our plug and play graphical user interface, or programmatically through our API. -
25
Hive Data
Hive
Create training datasets for computer vision models with our fully managed solution. We believe that data labeling is the most important factor in building effective deep learning models. We are committed to being the field's leading data labeling platform and helping companies take full advantage of AI's capabilities. Organize your media with discrete categories. Identify items of interest with one or many bounding boxes. Like bounding boxes, but with additional precision. Annotate objects with accurate width, depth, and height. Classify each pixel of an image. Mark individual points in an image. Annotate straight lines in an image. Measure, yaw, pitch, and roll of an item of interest. Annotate timestamps in video and audio content. Annotate freeform lines in an image.Starting Price: $25 per 1,000 annotations -
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understand.ai
understand.ai
Understand.ai provides cutting-edge ground truth annotation technology to handle complexity at scale. Their state-of-the-art annotation platform is designed to manage complex ground truth annotation projects, featuring scalable infrastructure that effortlessly handles high data volumes and projects of any size. It excels in customized data elevation and workflows, tailored to meet specific project needs while prioritizing compliance with stringent data privacy and security standards. User-friendly tools enable streamlined collaboration between customers and labeling partners, and automation capabilities significantly reduce manual annotation efforts, making large-scale ADAS/AD programs commercially feasible. Key features include multi-sensor integration, allowing seamless incorporation and processing of data from multiple LiDAR sensors for a comprehensive view of complex 3D environments and precise annotation. -
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TrainingData.io
TrainingData.io
Use AI to Train Better AI - Pixel Accurate Annotation Tools - Annotator Performance Management - Labeling Instruction Builder - Data Security & Privacy ControlsStarting Price: $10/month/user -
28
JPedal
IDR Solutions
JPedal is a versatile Java PDF Library for displaying, converting, printing, and parsing PDFs in Java applications. With over 20 years of development, it supports a wide range of PDF files. Key features include: -PDF to Image Conversion: Converts PDFs to images in various formats. -Java Swing PDF Viewer: Offers multi-page display, search, printing, and annotation editing. -Text and Image Extraction: High-quality extraction of text and images from PDFs. -PDF Search: Supports searching with wildcards and regular expressions. -Form & Annotation Handling: Supports XFA and AcroForms, enabling form data access and annotation editing. -Document Manipulation: Allows deleting, merging, splitting, and optimizing PDFs. -Security & Performance: Runs locally without third-party dependencies, processing PDFs up to 3x faster than alternatives.Starting Price: $950 one time fee -
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CaptureUX
Ovo Studios
CaptureUX is a right-sized, PC-based tool for UX research and usability testing. With CaptureUX, you can: Record participants in MP4 format. Annotate recordings in real time or post-test. Create stand-alone video highlights for use in websites and presentations. Generate lists of research findings/results. Publish HTML-based reports with annotations, findings, and links to MP4 video.Starting Price: $900/year -
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Open Paper
Open Paper
OpenPaper is an AI-native workbench designed to help researchers read, annotate, and understand academic papers more effectively. It offers a split-pane interface that allows users to engage with the full text of a paper while interacting with an AI assistant. This assistant provides grounded citations for its responses, ensuring transparency and trustworthiness. Key features include inline annotations, audio overviews of papers, and the ability to find related research using OpenAlex. Users can upload papers to build a personal knowledge base and switch between AI models like GPT-4 and Gemini 2.5 Pro. It also supports shareable annotations, facilitating collaboration among researchers.Starting Price: Free -
31
GAannotations
Crystal Ball
Add the missing pieces to the puzzle with manual annotations or upload bulk annotations via CSV, API, and Automations. Google updates, media mentions, holiday observances, website blackouts, and just about anything that can impact your website traffic. Automated annotations help ensure that your data is fully contextualized and that critical events are captured and logged. Our action alerts complement automated annotations by notifying you by email and SMS about key events that can impact your business. Get alerts about upcoming retail marketing dates, global holiday observances, Google and WordPress updates, and weather alerts so you can capitalize on opportunities and mitigate risks. You’ll also be alerted immediately if your site is offline or down unexpectedly.Starting Price: $6 per month -
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Docear
Docear
Docear is a unique solution to academic literature management, i.e. it helps you organizing, creating, and discovering academic literature. Among others, Docear offers a single-section user-interface that allows the most comprehensive organization of your literature. With Docear, you can sort documents into categories; you can sort annotations (comments, bookmarks, and highlighted text from PDFs) into categories; you can sort annotations within PDFs; and you can view multiple annotations of multiple documents, in multiple categories, at once. A ‘literature suite concept‘ that combines several tools in a single application (pdf management, reference management, mind mapping, etc.). This allows you to draft your own papers, assignments, thesis, etc. directly in Docear and copy annotations and references from your collection directly into your draft. A recommender system that helps you to discover new literature. -
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Innotescus
Innotescus
Innotescus is a collaborative video and image annotation platform built to streamline Computer Vision development processes via seamless data handling, smart annotation tools, and intuitive collaboration features. Additionally, its data visualization tools and cross-functional collaboration features identify data bias early, improve data accuracy, and enable faster, cost-efficient deployment of high performance Artificial Intelligence. -
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Swivl
Education Bot, Inc
swivl is simplifying AI training. In general, data scientists typically spend 80% of their time on non-value-added tasks such as finding, cleaning, and annotating data. Our no-code SaaS platform helps teams outsource these data annotation tasks to a vetted network of data annotators to close the feedback loop in a cost-effective way. This involves the action of training, testing, and deploying machine learning models with an emphasis on natural language processing, audio, and generalized data categorization.Starting Price: $149/mo/user -
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LLMCurator
LLMCurator
Teams use LLMCurator to annotate data, interact with LLM, and share results. Edit the model's response when needed to create higher-quality data. Annotate your text dataset by giving prompts and then export and process the response. -
36
RadPix
Weadock Software
RadPix is a radiological teaching file system which can be integrated into any PACS environment. It allows users to send selected images directly from the PACS to a stand-alone teaching file webserver. Complete radiological teaching files can be created by adding text, annotations and images. Annotations are added using built-in drawing software, designed for radiologists. Images can be exported as JPGs, PowerPoint files, Image Stacks in PowerPoint files and videos. Publication quality TIFF images with annotations are easily created and downloaded. Cases can be grouped into presentations, which then can be shown in a live setting, or used for testing purposes. Users can scroll through stacks of images, change window and level settings, toggle annotations on and off the images, and answer questions. Getting images from a PACS doesn’t need to be a chore! Our complete software solution starts with cases as they are read, and ends with endless educational opportunities.Starting Price: $199 one-time payment -
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Annotate
Annotate Software
Draft documents directly in Annotate and collaborate throughout the authoring process. Paste text from an existing document and Annotate will create a link to the original source, making fact checking a breeze. No need to share documents using insecure email attachments or file sharing services. Invite everyone involved in your discussion or project to collaborate in Annotate. Bring together the right team without worrying about keeping track of different versions. You decide who has permission to view and edit, so confidential information stays protected. Instead of disjointed discussions in chat apps and email threads, get your team talking within the document itself. Whether you’ve got something to say about specific sections, paragraphs, sentences or even words, use Annotate to chat in real time, mark up documents and add notes, and assign changes to the right team members. -
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Instacap
Instacap
Instant commenting & screen capture for fast visual feedback on live webpages, PDFs and more. Annotate screenshots without opening multiple apps and photo editors. Share a cropped or full-scrolling webpage screen capture with annotations and comments in one click. When text and typing are too slow or limiting—add an instant screen share instead. You can also record your voice for more in-depth explanations (NEW!) No more inefficient and long conversation threads and emails. Collect & share visual feedback on top of any PDF or document—all auto-organized in one place. Avoid long explanations, countless screenshots and meetings. Share visual feedback asynchronously directly on top of any webpage, screenshot or file via a single link—no sign ups or meetings required. Save time capturing and organizing countless screenshots across different tools.Starting Price: Free -
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OCI Data Labeling
Oracle
OCI Data Labeling is a service that enables developers and data scientists to build accurately labelled datasets for training AI and machine-learning models. It supports documents (PDF, TIFF), images (JPEG, PNG), and text, allowing users to upload raw data, apply annotations (such as classification labels, object-detection bounding boxes, or key-value pairs), and export the results in line-delimited JSON for seamless integration into model-training workflows. The service offers custom templates for different annotation formats, user interfaces, and public APIs for dataset creation and management, and smooth interoperability with other data and AI services, so annotated data can feed directly into custom vision or language models, as well as Oracle’s AI services. OCI Data Labeling lets users create a dataset, generate records, annotate them, and then use the export snapshot for model development.Starting Price: $0.0002 per 1,000 transactions -
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LightTag
LightTag
Label data for NLP faster with your team and our AI. LightTag manages your workforce so you can focus on the important things. Best of all, it just works. Work Faster With Our Optimized Interface: - Keyboard Shortcuts - No tokenization assumptions - Full Unicode Support - Subword and phrase annotations - RTL and CJK languages - Entity, Classification and Relation annotations LightTag's Review Mode and Reporting make it easy to ensure your data is perfect and your annotators are performing at their very best. LightTag's AI quickly learns high precision predictions, automating away simple labels and freeing your team to create more and higher quality labels. 50% of the annotations made in LightTag come from our AI suggestions, in any language! You can also provide suggestions with your own models, regular expressions and dictionaries. Use our review feature to quickly validate your models and bootstrap a project.Starting Price: $100 per month -
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T-Rex Label
T-Rex Label
T-Rex Label is an intelligent tool designed for complex scenario annotation, applicable across various industries. It is the go-to option for those aiming to streamline their workflows and effortlessly create high-quality datasets. Leveraging the power of visual prompts, T-Rex allows for the quick prediction of numerous bounding boxes in a single step, making it ideal for annotating complex and dense scenes. Leveraging its exceptional zero-shot detection capability, T-Rex empowers complex scene annotation across industries without fine-tuning, supporting diverse applications ranging from agriculture to logistics and beyond. T-Rex assists a growing number of algorithm engineers and researchers in speeding up their annotation workflows, enabling the creation of high-quality datasets. T-Rex2 represents a significant step towards more generic and flexible object detection, leveraging the complementary strengths of language and vision. -
42
Awesome Screenshot
Awesome Screenshot
Awesome Screenshot is a web service aimed at designers and screenshot enthusiasts, with the primary function of collecting and providing point specific feedback on your screenshots and designs. Awesome Screenshot plugin is the complete tool for capturing and sharing a portion or all of any images on your browsing device, with the ability to add text, annotations, lines, arrows and shapes directly onto your captured image. Collaboration is also made easy by point specific comments from the sharer or viewer directly on the captured, annotated image. There are 4 options for uploading a captured image; from the Chrome extension, drag and drop, choosing an image from your computer, and pasting an image from the clipboard. To leave a comment on an Awesome Screenshot image, first choose your desired color from the “point color” option on the top screen control bar. The “point color” bar will display the selected color. Then click anywhere on the image where you wish to place the message.Starting Price: $4 per user per month -
43
Steno Connect
Steno
Steno Connect for Zoom gives you all the flexibility and technological benefits of Zoom - like different views, breakout rooms, chat and messaging, and class-leading audio and video quality, with seamless exhibit handling, private file viewing, integrated presentation mode, auto-numbering, annotation collaboration, the ability to mark annotated exhibits, and more. With Steno Connect, exhibits are seamlessly shared, opened, viewed, and numbered directly within Zoom. Exhibits can be annotated, and files are automatically saved and marked as new exhibits. Focus on the deposition and save time by uploading your exhibits ahead of your deposition. Steno Connect is integrated with your Firm Dashboard, letting you prepare and spend your deposition asking questions, not trying to find and mark exhibits. Steno takes every precaution to protect the sensitive information attorneys work with, including transcripts and videos from confidential proceedings. Steno Connect was audited and demonstrated. -
44
Label Your Data
Label Your Data
Label Your Data stands for exceptional data annotation service. With PCI DSS (level 1) and ISO:27001 certifications, and adherence to GDPR, CCPA, and HIPAA, we guarantee your data is handled securely. Our services cover Automotive, Robotics, Fintech, Healthcare, E-commerce, Manufacturing, and Insurance industries. On a mission to co-build an AI-driven economy, we offer customized solutions for both enterprise and R&D projects with 500+ annotators on board. From Computer Vision and NLP annotation to data processing, Label Your Data delivers accurate and secure results to scale your AI projects. -
45
CrossCap Online Proofing
CrossCap
The best online proofing software for marketing teams. Ease of management and quality control over different versions and proof cycles. Creative access to changes in real-time improves productivity and accuracy. Documented user comments and sign-off ensures accountability and measures engagement. Archives create an audit trail and eliminate data loss. The InDesign Plugin allows Creatives to retrieve change requests and upload proofs for the next cycle in real-time. Detailed logging by user, date and time of annotation. Mark-up history is archived chronologically. Configurable proofing cycle workflow and approvals Customizable annotation types and colors. Ability to run multiple proofing cycles at once, all in real-time. Supports unlimited number of versions. Change requests can be applied across all versions and proof cycles. -
46
Noteastic
Noteastic OG
Noteastic delivers the digital handwriting experience Windows users deserve. Engineered natively for the platform, it combines responsive pen input with an intuitive interface that doesn't get in your way. Whether you're annotating research papers, capturing lecture notes, or sketching project ideas, Noteastic provides the tools you need without the bloat you don't. The app prioritizes performance — smooth inking, instant tool response, and efficient system resource usage set it apart from browser-based alternatives. PDF workflows are seamless. Import documents, annotate with precision tools, and export marked-up versions to share with colleagues or classmates. The organizational library keeps your notebooks structured and accessible. Key Features: - Responsive pen, highlighter, and shape tools - PDF import and annotation capabilities - Notebook library with flexible organization - Multiple paper styles and background options - Native Windows performance (not a web app)Starting Price: $0 -
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Pixta AI
Pixta AI
Pixta AI is a cutting‑edge, fully managed data‑annotation and dataset marketplace designed to connect data providers with companies and researchers needing high‑quality training data for AI, ML, and computer vision projects. It offers extensive coverage across modalities, visual, audio, OCR, and conversation, and provides tailored datasets in categories like face recognition, vehicle detection, human emotion, landscape, healthcare, and more. Leveraging a massive 100 million+ compliant visual data library from Pixta Stock and a team of experienced annotators, Pixta AI delivers scalable, ground‑truth annotation services (bounding boxes, landmarks, segmentation, attribute classification, OCR, etc.) that are 3–4× faster thanks to semi‑automated tools. It's a secure, compliant marketplace that facilitates on‑demand sourcing, ordering of custom datasets, and global delivery via S3, email, or API in formats like JSON, XML, CSV, and TXT, covering over 249 countries. -
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CVAT
CVAT
Annotate better with CVAT, the industry-leading data engine for machine learning. Used and trusted by teams at any scale, for data of any scale. CVAT’s blazing-fast, intuitive user interface, was designed by working closely with real-world teams solving real-world problems. From medical to retail to autonomous vehicles, world’s most ambitious AI teams use CVAT as a part of their AI workflow every day. No matter what your input data or expected results are, CVAT is ready. It works great with images, videos, and even 3D. Bounding boxes, polygons, points, skeletons, cuboids, trajectories, and more. Annotate more efficiently with automated interactive algorithms like intelligent scissors, histogram equalization, and more. Gain actionable insights with metrics such as annotator working hours, objects per hour, and more.Starting Price: $33 per month -
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Prodigy
Explosion
Radically efficient machine teaching. An annotation tool powered by active learning. Prodigy is a scriptable annotation tool so efficient that data scientists can do the annotation themselves, enabling a new level of rapid iteration. Today’s transfer learning technologies mean you can train production-quality models with very few examples. With Prodigy you can take full advantage of modern machine learning by adopting a more agile approach to data collection. You'll move faster, be more independent and ship far more successful projects. Prodigy brings together state-of-the-art insights from machine learning and user experience. With its continuous active learning system, you're only asked to annotate examples the model does not already know the answer to. The web application is powerful, extensible and follows modern UX principles. The secret is very simple: it's designed to help you focus on one decision at a time and keep you clicking – like Tinder for data.Starting Price: $490 one-time fee -
50
Niimblr
Niimblr
The client feedback platform for digital creators. Niimblr improves digital creators’ production process, for fewer iterations and better client relations. Feedback is time-consuming and confusing for digital creators and clients. Miscommunication leads to conflicts and delays. A collaborative feedback platform eliminates these issues. No need to be an artist or technical specialist to provide feedback: Niimblr is designed for general use. Reviewers can point-and-click directly on the content to leave comments. 3D content can be annotated from specific angles, and videos can be annotated at precise timestamps.Starting Price: free
