Alternatives to iAnnotate
Compare iAnnotate alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to iAnnotate in 2026. Compare features, ratings, user reviews, pricing, and more from iAnnotate competitors and alternatives in order to make an informed decision for your business.
-
1
LunaNotes
LunaNotes
LunaNotes is a versatile note-taking app specifically designed for YouTube, enabling users to efficiently capture and organize notes directly within the video-watching experience. With LunaNotes, users can create time-stamped annotations that sync with video playback, making it easy to revisit specific moments and insights. Key features include: Seamless YouTube Integration: Take notes directly on YouTube videos without switching tabs or applications. Time-Stamped Annotations: Sync notes with exact moments in the video for quick reference. AI-Powered Chat-with-Video: Leverage an AI assistant to enhance your note-taking process, similar to ChatGPT for YouTube. Searchable Notes: Quickly find specific notes or topics within your annotations. Flexible Sharing Options: Share notes publicly with a link or privately with other LunaNotes users. Free users can create public notes, while premium users have advanced sharing capabilities.Starting Price: $9.99 per month -
2
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 -
3
Flexcil
Flexcil
Flexcil is a study toolkit that allows PDF annotation, notes creation, and convenient sharing with others. Review and utilize PDFs to study effectively. Use PDF reader, digital note, annotation, and reference manager in one page. Use simple Gestures UX to annotate PDF and organize notes efficiently without interruption. Save time to read, organize, and edit materials. Use the time saved to concentrate on your study. You don’t have to go through Apple’s default complex process! With Flexcil, you can select text and images, and take notes by intuitive pen gestures. By combining PDF reader and digital note, you can view the PDF while dragging elements from it to your notes at the same time and organize them easily. Edit PDFs to your taste by merging, adding, and moving. You can also edit Notes as well! All resources organized in Flexcil such as texts, images, and notes are linked systematically to trace your data easily and quickly. -
4
Nebo
Nebo
Turn handwritten notes into professional documents with the world's best write-to-text conversion. Add PDFs to your notebooks, mark them up and export to PDF with your annotations in place. Write and draw freely on an infinite canvas, then copy content for reuse on other pages or in other apps. From boardroom to lecture hall, project plan to daily diary, Nebo makes note-taking smarter, more efficient and more enjoyable. Take your notes with you everywhere. Download the new companion app for iPhone to read, search and share content on the go. Download and enjoy Nebo on Apple silicon devices! Available free from the iPhone and iPad apps section of the App Store. You can now add highlights to titles as well as colored, bold and underlined text. Touch and hold with the marker to change the color of highlights, words, strokes, diagram shapes and math symbols. -
5
ARES Touch
Graebert
ARES Touch is a comprehensive mobile CAD solution for iOS and Android devices, enabling users to create and modify DWG drawings on tablets and smartphones with a full suite of 2D drafting and annotation commands. Optimized for touch inputs, it allows field workers to access, annotate, and synchronize drawings in real time, ensuring they always work with the latest versions. Users can view, annotate, and modify DWG files on the go, making it ideal for technical surveys, on-site inspections, maintenance, project coordination, client meetings, and facility management. It supports synchronization with popular cloud storage services like Dropbox, Box, iCloud, Google Drive, and OneDrive, allowing offline access when needed. It offers a complete set of 2D drafting tools, including precise drawing aids such as the loupe, entity snap, tracking, and coordinate input. Additionally, ARES Touch enables users to annotate drawings with pictures taken from the device's camera and text legends.Starting Price: Free -
6
Notability
Ginger Labs
Combine handwriting, photos and typing in a single note to bring your projects to life. Use a wide range of note-taking and sketching tools to capture every detail. You can even add and annotate PDFs in Notability. It’s the perfect place to create and organize work, school, and life's information! Experiment with different tools to create beautiful, hand-crafted notes and sketches. Continue to scale, rotate, and recolor your ideas and sketches until your notes are just how you want them. Once you're done, organize your notes with ease so you always know where to find what matters most. Zoom in on the specifics, or explore the big picture by combining sketches, outlines, and type. Now you are ready to share your notes with colleagues or study partners through Google Drive, AirDrop, Email and Dropbox. -
7
GoodNotes
Time Base Technology
Take beautiful, searchable handwritten notes and effortlessly organize all your documents & notebooks in a single place. Always find what you wrote. Thanks to powerful OCR technology, everything in GoodNotes is searchable. Find handwritten notes, PDF text, document & folder titles, typed text, and outlines. Write and sketch with your finger or a stylus on digital paper & imported documents. You can add images, typed text and perfect shapes to the page and reorder and resize them as you wish. GoodNotes lets you escape the limits of real paper. GoodNotes is a single place for all your documents. Quickly import PDF, Word, and PowerPoint files to annotate them or create a new blank notebook to take notes. Organize and manage them with ease. No document will ever be lost again. Write down ideas on the go and annotate photos. You will always have your notes with you on all of your devices thanks to iCloud sync. Endless sheets of paper in your pocket. -
8
Noteful
Noteful
Noteful is a digital note-taking and annotation app optimized for handwriting on iOS devices that blends fluid pen input with powerful document tools. You can write naturally using Apple Pencil or touch input; its custom ink engine records strokes as scalable vector ink, and you can switch between three brushes (ballpoint, fountain, highlighter), sizes, and colors. Beyond handwriting, Noteful supports importing PDFs and Office documents, annotating with typed text, images, and shapes, and layering multiple paper templates within a single notebook. Notes can be organized flexibly via hashtag tagging (including nested tags), rather than rigid folder structures, and you can browse content by tags or pin important pages. It offers a layer system so you can annotate without altering base content, hiding or reordering layers as needed. Editing tools include a precise eraser, lasso selection for moving or resizing content, unlimited undo/redo, and split-view multitasking.Starting Price: Free -
9
SignFlow
PDF Technologies
Simple but mighty! SignFlow makes reading, annotating, editing, e-sign, organizing, filling, secure PDFs effortless! Packed with essential PDF tools, SignFlow is your best PDF files partner. SignFlow allows you to apply a legally-binding digital signature in PDFs, and it provides an effortless PDF solution for you to create, edit and fill out PDF forms. You can edit text in PDFs like word, manage and edit PDF pages, annotate and view your PDFs. Enjoy different reading modes, such as Full-Screen, Single Page, Read Mode, Split View, Multi-tab. You can smoothly scroll pages and switch between day mode, night mode and eye-protection mode. Annotate to remember! You can highlight, underline, strikethrough texts in PDF. There are colors for you to emphasize different information. Enrich your PDFs with standard business stamps like APPROVED, digital stamps, dynamic stamps and custom text/image stamps. -
10
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 -
11
Snip & Sketch
Microsoft
Quickly annotate screenshots, photos and other images with your pen, touch, or mouse and save, paste or share with other apps. Create new screen snip or open image file. Mark up images with pen, pencil, or highlighter. The drawing canvas supports inking in the margins. Save, copy to clipboard, or share your creation. Quickly capture screen snips or screenshots. Mark up images with ink. Easily share your annotated content. At Microsoft, our mission is to empower every person and every organization on the planet to achieve more. Our mission is grounded in both the world in which we live and the future we strive to create. Today, we live in a mobile-first, cloud-first world, and the transformation we are driving across our businesses is designed to enable Microsoft and our customers to thrive in this world. We do business in 170 countries and are made up of 144,000 passionate employees dedicated to fulfilling our mission of helping you and your organization achieve more. -
12
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. -
13
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. -
14
Adobe Acrobat Reader
Adobe
View, sign, collaborate on, and annotate PDFs with our free Adobe Acrobat Reader. Only with Adobe Acrobat Reader you can view, sign, collect and track feedback, and share PDFs for free. And when you want to do more, subscribe to Acrobat Pro. Then you can edit, export, and send PDFs for signatures. Do more than just open and view PDF files. It’s easy annotate documents and share them to collect and consolidate comments from multiple reviewers in a single shared online PDF. Work on documents anywhere using the Acrobat Reader mobile app. It’s packed with all the tools you need to convert, edit, and sign PDFs. You can use your device camera to capture a document, whiteboard, or receipt and save it as a PDF. Acrobat Reader is connected to Adobe Document Cloud, so you can work with your PDFs anywhere. You can even access and store files in Box, Dropbox, Google Drive, or Microsoft OneDrive.Starting Price: $1.95 per month -
15
Annotator
Annotator
Annotator is an open source JavaScript library to easily add annotation functionality to any webpage. Annotations can have comments, tags, links, users, and more. Annotator is designed for easy extensibility so it's a cinch to add a new feature or behaviour. Annotator also fosters an active developer community with contributors from four continents, building 3rd party plugins allowing the annotation of PDFs, EPUBs, videos, images, sound, and more. Adding an annotation to any website is easy with Annotator. First, download the Annotator library, and include it in your HTML. Annotator has a simple but powerful plugin architecture. Plug-ins can also be included for adding functionality such as user permissions, tags, filtering, and formatting. More than a dozen projects rely on Annotator for their digital annotation needs and many are open source. Share text and video annotations using social networks or email.Starting Price: Free -
16
Microsoft OneNote
Microsoft
Microsoft OneNote is your all-in-one digital notebook for capturing ideas, organizing thoughts, and collaborating seamlessly. With Copilot in OneNote, you can draft plans, generate ideas, and structure your notes using simple natural-language prompts. Sketch, annotate, and highlight freely using digital ink that feels as natural as pen on paper. Share notebooks in real time to brainstorm, plan, or learn together with teammates, classmates, or family. Built-in voice transcription ensures you never miss key details from meetings or lectures. Whether at home, school, or work, OneNote helps you stay organized and creative across all your devices.Starting Price: Free -
17
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. -
18
FrontSketch
Digola
FrontSketch is an advanced drawing and annotation tool that allows users to freely draw, annotate, and write directly on the screen. With a wide range of tools, including pencil, marker, arrows, spray, fill, shapes, text, stamps, and eraser, it enhances presentations and collaborative work. Additionally, it enables saving and sharing drawings via email, printing, or copying to the clipboard. Furthermore, compared to similar tools, it offers many additional options such as spray, draw once, screen grid, zoom, sharing sketches' latest drawings via email, processing sketches or drawings after capture, and various graphic effects.Starting Price: $15 one-time payment -
19
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 -
20
Outline
Gorillized Corporation
Outline is the ultimate productivity-boosting note-taking app for your Mac, iPad and iPhone. It allows you to effortlessly capture, organize, and sync your notes across devices. With 100% compatibility with OneNote, you can import and export seamlessly. Annotate PDFs, add images, and stay organized with folders and tags. Whether you prefer cloud storage or local storage, Outline offers flexible options. Upgrade your note-taking skills and gain full control over your digital workspace with this powerful app!Starting Price: $4.99 -
21
NoteLedge
Kdan Mobile
NoteLedge is a digital notebook for designers and content creators to capture inspiration, make mood boards, and accelerate your creative process. Capture ideas and get creative in your unique style. Watch this video and learn how to bring ideas to life with NoteLedge. NoteLedge comes with powerful multimedia tools for you to capture inspiration anywhere. Discover and save ideas from Pinterest and websites. Take notes and add annotations to highlight what matters most. Organize everything and create mood boards to visualize your thoughts. NoteLedge's flexible workspace allows you to arrange content with layers get creative with your projects. Follow your thoughts and start your own creation! Make beautiful sketches and drawing with a variety of brushes made for designers. Play around photos and stickers to create collages or artworks. Export notes to PDFs with multimedia content embedded. Present your work to clients in slideshow or share ideas with teammates. -
22
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. -
23
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. -
24
DEVONthink
DEVONtechnologies
Focus on your work and let DEVONthink remember all the details. Collect, organize, edit and annotate documents of any kind. Have them automatically analyzed, connected, and filed. Sync them between your Mac, iPhone, and iPad. DEVONthink keeps all your documents in easy-to-backup databases and presents them to you in a variety of ways. Many documents can be viewed and edited without opening them in another application. Read web pages as if they were local documents. DEVONthink Pro scans paper documents and makes them searchable, imports email, and even downloads complete web sites. Don’t fight the information flood alone. Let DEVONthink for Mac categorize documents based on how you filed similar documents before. Add smart rules to file documents, rename them, or process them in other ways automatically. Later retrieve the data you need using DEVONthink’s fast and flexible search. Find similar documents with keywords extracted from the document.Starting Price: $99 one-time payment -
25
JotNot Signature
JotNot
JotNot Signature makes it simple to sign documents in electronic format without having to print, sign and scan. Use JotNot Signature's built-in signature pad to sign your name and drop it into your document directly. Once signed, share your document via email or copy it to one of the supported cloud storage services, such as Dropbox or Google Drive. JotNot Signature is the perfect companion to JotNot Fax. Use JotNot Signature for signing and then open it in JotNot Fax for faxing. Use text, date, and checkmark annotation types to fill out forms electronically. For added security, password protect your signed document before emailing or sharing. Additionally, add a password lock to the entire app to deter access to your JotNot Signature files by unauthorized persons. Import & share documents from Email, Dropbox, Google Docs, WebDAV or iDisk. Sign PDF documents from your iPhone or iPad, add text, date, and checkmark annotations. -
26
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 -
27
Diigo
Diigo
Diigo is your personal knowledge database. Dramatically improve your research productivity and collaborative sharing. Diigo is the complete solution for online information workflow management, editing and sharing. Streamline, save, share and interact with your online information all in one place. Whether you’re online knowledge library consists of reading, education based researching and sharing, school papers, work projects, online learning, news, travel, health, shopping, career, hobbies, investing, Diigo has your covered. We make it simple to store and mark your information with tags, organize and edit thru annotations and notes right on the webpage, and share the parts you want with anyone. Read more effectively with annotation tools as you browse around the web. Add digital highlighters and sticky notes whether on PC, tablets, or mobile, and have them always be where you left them when you return!Starting Price: $10 per user per month -
28
Noteshelf
Noteshelf
Noteshelf, the acclaimed note-taking app that has millions of users across the globe, is revolutionizing the way students, professionals, and creatives take notes digitally. Noteshelf empowers users to enhance their productivity and creativity with its wide-ranging features, including organized note-taking, document annotation, sketching, bullet journalling, and many customizations. A standout highlight within this version is the Noteshelf AI, a note-taking assistant designed to help students take better notes faster and understand new concepts easily. Its ability to generate beautiful handwritten notes on any topic stands as a unique hallmark of this app and has garnered praise and positive reviews from the worldwide note-taking user community.Starting Price: $9.99 -
29
Markup Hero
Markup Hero
Hello Productivity. Try a screenshot and annotation tool that works on the web. Made for Mac, Windows, Linux and Chrome. Speed Up Your Workflow. Markup Hero helps you capture ideas, communicate clearly, save time and stay organized. Capture Ideas. Instantly capture and share ideas with Markup Hero's screenshot app and image / PDF uploader. Communicate Clearly. Clearly communicate your message on any image or PDF with easy to use annotation tools. Save Time. Access all your markups and annotations with a click and make edits on the fly. Stay Organized. Keep all your markups organized with tags, history and custom privacy settings. Feature Overview. All the tools you need to communicate your message on any image or PDF. Screenshots, Upload Images & PDFs, Capture Full Websites, Add Multiple Pages, Full History & Editing, Privacy Settings, Text Tool, Arrow Tool, Line Tool, Rectangle Tool, Oval Tool, Blur Tool, Pen Tool, Highlighter Tool, Colors Size & Thickness.Starting Price: $4 per month -
30
Apowersoft CAD Viewer
Apowersoft
An easy-to-use, yet full-featured CAD software that can view, annotate, measure, edit and convert your drawings quickly. Anyone can open and view all versions of AutoCAD drawings completely and accurately, and even edit and model their designs quickly and easily due to its exclusive analytical technique. No matter if it's a higher or lower DWG file, this CAD software allows you to open it without such problems as unclear fonts, wrong mild steel types, inexplicable Latin character garbled, etc. It also has a useful toolkit to modify and re-model the designs.You can annotate your drawings with text, linear, ellipse, rectangle, etc. In addition, add annotative dimensions to the objects in your draft without damaging the quality including linear, radial, angular, ordinate, arc length, etc. Measure the distance, angle, radius, area, volume, arc length, coordinate, and even edit the drawings as you go.Starting Price: $19.95 -
31
CollaNote
CollaNote
CollaNote is a versatile note-taking and PDF markup app available for iPad, iPhone, and Mac that blends handwriting, sketching, collaboration, and AI tools in one environment. You can choose from over 25 pens and brushes, stabilize handwriting for smoother writing, and use infinite paper with customizable templates. CollaNote supports importing and annotating PDFs, slides, images, and documents, exporting notes to PDF, and backing up via iCloud for seamless syncing. It includes translation tools (for over 90 languages), flashcard creation with media, real-time collaboration across users, and password-protected notes. AI-powered features include a built-in AI calculator for handwritten notes, smart drawing tools (auto shapes), AI sticker generation, and writing assistance. The app also supports audio recording synchronized with handwriting, enabling you to replay lectures or meeting moments in context.Starting Price: Free -
32
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 -
33
A+ Signature
Pixtolab Technologies
A+ Signature is a multi-usage photo annotation app that allows you to make your mark on any photo. We have released the new Mix on the Pix app. It's a major improvement over A+ Signature, check it out! Use A+ Signature as a productivity tool to annotate pictures at work or at home. Protect your pictures with an elegant watermark. Create fun photo cards and share them with your friends. Add any autograph to your photos. Express yourself with Internet memes. A+ Signature's unique combination of texts and hand drawing tools makes it easy for all the family to enhance and share photos. Use the keyboard, and add multiple texts. Use the capture screen, add multiple drawings, or smooth handwriting. Built with one of the best-handwritten signature technologies in the App Store. Use the catalog to easily reuse your favorite texts and drawings. Use customizable stock items. Share your annotated photos with friends via email, AirDrop, or by sending them to Facebook, Twitter, etc.Starting Price: $1.99 one-time payment -
34
Freenotes
Freenotes
Freenotes offers a digital note-taking experience that blends the feel of writing on paper with powerful AI enhancements. You get realistic pen strokes that mimic lifelike handwriting as you sketch or take notes, along with tools like handwriting-to-text conversion, stickers, and various brush styles. Your notes sync via iCloud and multi-cloud backups. Freenotes supports PDF annotation, letting you mark up, highlight, and translate text directly in your documents; you can also insert hyperlinks to other pages or external web content. It enables picture-in-picture video mode and split-screen support so you can take notes while watching course videos or lectures. With its built-in AI assistant, you can take a screenshot or upload a document and receive instant answers or content summaries. To stay organized, notes can be grouped into folders, and a quick search lets you locate what you need fast.Starting Price: Free -
35
MeritHub
MeritHub
MeritHub is the most powerful, and globally used platform that is purposely built for interactive online teaching. It covers all aspects including audio/video communication, tabbed whiteboards, drawing & annotation, screen sharing, breakout rooms, and lesson recording in MP4 format. You can store & share content, homework, and assignments, and track all activities including attendance. Tutors love the MeritHub whiteboard to share & annotate PDFs and PowerPoints in real-time, across devices. They can copy-paste text & images, insert equations, embed & edit Google docs, and play audio/video files, YouTube, quizzes, and games. World’s most powerful virtual classroom and whiteboard designed for online teaching. Compare it with any platform. Replace Zoom and Google Meet. Manage schedule, bookings, teachers, students, attendance and more!Starting Price: $0 -
36
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 -
37
Heptabase
Heptabase
Heptabase empowers you to visually make sense of your learning, research, and projects. To truly make sense of what you've learned, visualize your notes with whiteboards, sections, and mindmaps. Bring all your highlights, annotations, PDFs, journals, and research notes together to discover new insights. Manage complex projects with clarity and flexibility by using powerful tags and properties. And of course, full offline access with blazing-fast speed. Sync and access your notes across unlimited desktop devices, mobile devices, and web browsers. Access all notes and files without an internet connection. Search, load, and edit your notes with blazing-fast speed. Heptabase is a visual note-taking software specifically designed to help you learn and research complex topics, establishing a deep understanding of things you care about. The design of Heptabase focuses on helping you better "understand the topics you care about," rather than simply "taking more notes."Starting Price: $8.99 per month -
38
Krock
Krock.io
It’s a tool for video production companies that helps to manage creative teams through visual communication with clients at every stage of the production process. With Krock, you can upload videos, images, and other media files and draw annotations above the media content. This platform allows you to manage tasks, assign people to projects, and control work at each stage and in each version. It has a user-friendly interface. Another advantage of Krock - you can store project assets and control their visibility to team members and clients. 👉 Make annotations over video and images 👉 Share different types of files with the team and clients 👉 Build a custom pipeline for your video projects 👉Assign teammates for different tasks within different projectsStarting Price: $80 for 5 users -
39
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. -
40
UPDF
Superace Software Technology Co., Ltd.
UPDF supports editing, annotating, and managing PDF seamlessly on for Windows, Mac, iOS and Android. You can get every tool you need to edit, annotate, and organize your PDF files in one premiere all-rounder smart application. It is explicitly designed to meet the desire of most users for a stunning yet very comprehensible interface that is not just only for beginners. Key Features: 1. Edit PDF Document - You can add or delete texts as well as edit the text's properties and formats such as its font style, font color, and size. - You can also crop, rotate, replace, extract or delete images. 2. Annotate PDF - Easily highlight, underline, and strike out those parts. You can also add shapes, sticky notes and text boxes for a quicker and easier means of adding texts. 3. PDF Page Management - Rotate, delete, extract and rearrange PDF pages as you need. 4. View and Navigate PDF Files - Flexible reading mode such as single page mode or double-page mode.Starting Price: Free -
41
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. -
42
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! -
43
FastStone Capture
FastStone
FastStone Capture is a powerful, lightweight, yet full-featured screen capture tool and screen video recorder. It allows you to easily capture and annotate anything on the screen including windows, objects, menus, full screen, rectangular / freehand / fixed regions as well as scrolling windows / web pages. It also allows you to record all screen activities including onscreen changes, speech from microphone, audio from speakers, mouse movements and clicks into highly compressed video files. You can choose to send captures to editor, file, clipboard, printer, email, OneNote / Word / Excel / PowerPoint document or upload them to your website. Editing tools include annotating (texts, arrowed lines, highlights), resizing, cropping, sharpening, watermarking, applying edge effects and many more. Other features include image scanning, global hotkeys, automatic filename generation, support for external editors, a color picker, a screen magnifier, a screen crosshair and a screen ruler.Starting Price: $19.95 one-time payment -
44
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 -
45
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 -
46
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 -
47
CleanShot X
CleanShot
Our overlay makes sharing a breeze. Instantly save, copy or drag & drop screenshots or screen recordings to other apps. Whatever your workflow looks like, it's going to fit. In a matter of seconds highlight important parts of your screenshot with our annotation tool. Loved by our users, it beats any other annotation app. Upload your captures to our blazing-fast Cloud and instantly get a shareable link. Need to capture something that doesn't fit on your screen? Maybe you want to save a chat history or a larger chunk of code? We got you covered! It’s all about making things easier. In a few clicks, record your screen and save it as a video or an optimized GIF file. Keep a reference of anything you need always visible. It will float above all windows. Take a screenshot or record your screen without icons on your Desktop. You can even hide them permanently so they don't distract you.Starting Price: $29 per user -
48
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 -
49
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. -
50
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.
