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An open-source desktop PDF toolkit with inspection and CLI tools

Edit and convert PDFs with OCR and batch tools

Online PDF conversion with a Windows OCR companion

PDF-to-spreadsheet conversion with layout and OCR tools

A multi-format notebook for handwriting, PDFs, voice notes, and study documents.

A visual knowledge notebook for connecting research, highlights, and ideas on whiteboards.

An open-source iPad notebook for Apple Pencil writing and PDF markup.

A teaching whiteboard with video calls, lesson materials, and PDF or image annotation.

Write with Apple Pencil in an Obsidian vault and keep handwritten pages beside Markdown notes.

A shareable infinite drawing board for handwriting, tutoring, diagrams, and PDF markup.

An open-source desktop notebook for stylus handwriting, PDF markup, layers, and audio notes.

Handwritten study notes, PDF markup, audio capture, and AI-assisted review for students.

Write and annotate handwritten notes on Android with page layouts, linked notes, and PDF tools.

Batch PDF-to-Word conversion through a simple upload queue

Online document conversion with PDF compatibility controls

PDF preflight and correction through profiles and process plans

PDF presentation with notes and media on two screens

Print to PDF with automatic naming and batch options

Add searchable text to scanned PDF documents

Java PDF assembly, booklet layout, and metadata tools

Extract tables from text-based PDFs into spreadsheets

Create and edit PDF bookmark trees

PDF content and page editing with browser and desktop routes

PDF review with split view, comparison, and forms