Adobe Acrobat Reader
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.
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Drawboard PDF
Drawboard PDF is the most intuitive PDF editing and markup app for Windows, iOS, macOS, android and web. Powerful PDF tools that feel good to use.
Drawboard PDF – Get all the essential free. Mark up and edit any PDF with the ease of pen and paper.
Drawboard Pro toolset - Upgrade to use advanced tools and Store+Share with your team.
MARK UP AND DRAW
All the drawing tools you need to mark and collaborate with the feel of pen and paper.
INSERT
Insert elements into your documents like, text, notes, callouts, signatures, images, audio notes, and more.
MEASURE
Take accurate measurements of elements on-page with technical measurement tools and calibration.
MANAGE
Local and Clouds PDFs in one place. Merge, split, reorder and compress
COLLABORATE
Real-time collaboration on-page in real time with instant syncing
CROSS-PLATFORM
Work from anywhere on any device, in real-time!
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PDF Studio
PDF Studio is a powerful and affordable PDF editor that effortlessly caters to both simple and complex PDF tasks. From adding text, various annotations, watermarks, and digital signatures to filling out forms and converting MS Office to PDF, it covers all your needs.
The PDF editor is perfect for companies and organizations looking to seamlessly automate their PDF editing and eliminate repetitive daily tasks with batch processing of multiple documents. Empower your team with perpetual PDF software at a fraction of the cost compared to competing subscription-based solutions like Adobe® Acrobat®.
NEW: Qoppa PDF Studio 2023 released!
The latest version, PDF Studio 2023, offers impressive enhancements, including support for Dropbox Team Spaces, improved enterprise deployments, expanded multi-document functions, a new highlighter marker tool, and optimization options for smaller document sizes.
Available on Linux, Windows, macOS, and other major platforms.
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Sumnotes
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!
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