Redact & Annotate images. Hide or mark up essential parts of your image by simply clicking and dragging on it.
Cost / License
- Free
- Proprietary
Platforms
- Mac
- Windows
United States


Redact & Annotate images. Hide or mark up essential parts of your image by simply clicking and dragging on it.


Combine tasks, numbered project steps, notes, goals and chat with calendars, reminders and an AI assistant that turns emails or documents into plans.




Free, privacy-first collection of 95+ PDF tools that process files entirely in your browser using WebAssembly. No uploads required - your documents never leave your device.


AI-powered construction operating system that replaces multiple standalone tools with one unified platform for project management, procurement, quality, safety, and finance.




Nectain is an AI-first Document Management System that transcends traditional file storage. With OCR-enhanced indexing and semantic search, invoice and contract workflows, and workflow automation, Nectain helps teams find and process documents in seconds.




Use Spade to draw your ideas, notes, and thoughts anywhere and save them for later. Spade provides a toolbar on every webpage for drawing, marking down important information with a pen, highlighter, and text box.




Nettongia PDF Editor is a free and open-source PDF editor for Windows that processes documents locally without uploading them to a server. It allows users to edit existing text, add and modify images, reorder, rotate or delete pages, create and insert signatures, search...

Do more than just view your PDF files online. With the Acrobat extension, you can mark up proposals, leave sticky note comments, and use your favorite PDF tools without leaving your browser.
Cadri Commander combines dual-pane file management, PDF tools, Git browsing and cloud access in one free Windows app. Preview files, browse archives, organize with tags and search document content without switching tools.



Free Windows research workspace for PDFs, source-linked notes, comparison, exact search, optional local semantic search, citations and bibliographies.




Seamlessly integrate AI with Zotero to analyze, organize, and extract insights from your research materials.




No need to pay subscriptions for complicated tools, PDF Extractor is one of easier and most simple tools to edit your PDF file. With this simple tool you can extract all of the text from your PDF. You can also combine the texts from several different PDF files without the need...




Transforms notes, PDFs or textbooks into interactive sessions with voice explanations, step-by-step guidance, quizzes, flashcards and personalized study plans.

Construction management platform for AEC contractors, combining AI-powered inspections, RFIs, submittals, bidding, and document management.

CitApp is a free citation and reference management tool built for students. Paste a URL or DOI and CitApp automatically fetches the title, author, publisher, and date then formats a ready-to-use citation in Harvard, APA, MLA, or any of 17 supported styles.


WorkContext is an open-source, AI-powered workspace designed to solve context fragmentation across engineering tools. It unifies communication and documentation across Slack, Jira, Notion, and GitHub into a single context layer.




PDF 7 is an efficient and reliable app for all your PDF needs. Organize, merge, rotate, compress, and convert PDFs effortlessly. It also supports converting images and documents to and from PDFs, along with various additional features like extracting pages, repairing files, and more.

Scribylus is a simple and focused desktop application for creating handwritten presentations, teaching materials, and study notes.



Edge Translate is a simple and practical translation plugin that supports mainstream browsers such as Chrome, Firefox, and 360 Secure Browser. The main purpose of our plugin is to assist users in reading foreign literature.


ParseFlow is a document parsing API that converts PDFs, DOCX files, and plain text into structured, evidence-backed JSON output for developers, automations, and AI workflows. I built it to help improve context across AI applications as well as reduce token costs.



Privacy-first PDF sharing with page-by-page reader analytics. See who read your document, how far they got, and who came back, without a single visitor IP ever stored.




PDF Max is a desktop class PDF app for reading, annotating or signing PDF documents on your iPhone/iPad. Mark up documents with highlights and handwriting, insert texts and stamps, fill out, sign PDFs and even manipulate PDF pages.




Word, Excel, PowerPoint and images, OCR scanned documents into searchable PDFs, edit existing text, sign, annotate, add watermarks or page numbers, encrypt, unlock, repair and flatten, extract embedded images or plain text, convert a web page to PDF, and scan paper documents...




PDF Assist is a versatile tool for PDF manipulation, offering a secure redaction feature that completely removes selected content, including common areas like National Insurance Numbers and phone numbers.






