- Stirling-PDF by Stirling-Tools, 97k stars. Self-hosted web app with many tools to edit, convert and merge PDFs
- PaddleOCR by PaddlePaddle, 93k stars. OCR toolkit that turns PDFs and images into structured data for LLMs
- MinerU by opendatalab, 84k stars. Converts PDFs and Office files into markdown or JSON for LLM pipelines
- docling by docling-project, 71k stars. Converts PDFs and office files into structured text and tables for LLM pipelines
- pdf.js by mozilla, 54k stars. PDF renderer written in JavaScript that runs in the browser
- paperless-ngx by paperless-ngx, 48k stars. Self-hosted document archive that scans, indexes and searches your files
- marker by datalab-to, 41k stars. Converts PDFs to markdown and JSON with layout-aware extraction
- book-to-skill by virgiliojr94, 38k stars. Converts a technical book PDF into a Claude Code skill
- OCRmyPDF by ocrmypdf, 35k stars. Adds a searchable text layer to scanned PDFs using Tesseract OCR
- Unlimited-OCR by baidu, 31k stars. OCR project for parsing long documents into text in a single pass
- opendataloader-pdf by opendataloader-project, 30k stars. Java PDF parser that outputs JSON, markdown and HTML with accessibility tagging
- koodo-reader by koodo-reader, 29k stars. Ebook manager and reader for desktop, mobile and web with sync and backup
- Filee by KnifeLemon, 27k stars. Offline file converter for 263 formats including documents, media and e-books
- readest by readest, 26k stars. Cross-platform ebook reader for EPUB files with a modern interface
- anydoc by firecrawl, 24k stars. Converts Office, PDF, EPUB and CSV files to Markdown, with Node and Python APIs
- pdfcraft by storytold, 21k stars. PDF reader and editor written in Rust
- ebook2audiobook by DrewThomasson, 21k stars. Converts e-books to audiobooks with many text-to-speech engines and voice cloning
- pdf-inspector by firecrawl, 20k stars. Rust PDF classifier that detects scanned versus text PDFs and extracts text
- docuseal by docusealco, 19k stars. Self-hosted e-signature app for filling, signing and tracking PDF documents
- bentopdf by alam00000, 16k stars. PDF toolkit for converting, viewing, and generating PDF files
- unstructured by Unstructured-IO, 16k stars. Open source ETL that converts documents like PDFs into structured data
- ImageToolbox by T8RIN, 16k stars. Android app for image editing with crop, filters, OCR and many tools
- pdfcraft by PDFCraftTool, 9.8k stars. Browser based PDF toolkit for editing, converting, merging and splitting files
- papermark by papermark, 9.4k stars. Open-source document sharing with analytics, data rooms and custom domains
- OpenSign by OpenSignLabs, 7.3k stars. Self-hostable e-signature app for signing and tracking documents
- kcc by ciromattia, 6.0k stars. Converts comic and manga archives into formats for e-ink and Kindle readers
- pdfcn by shadcn-labs, 3.1k stars. React components for building PDFs from JSX with zero configuration
- SnapOtter by snapotter-hq, 3.0k stars. Self-hosted tool to convert, compress, OCR and transcribe files via UI and API
- file-viewer by flyfish-dev, 2.9k stars. Browser viewer for 275+ formats including Office, PDF, CAD and archives
- contextgem by shcherbak-ai, 2.1k stars. Python framework for pulling structured data out of documents with LLMs
- indra by datalab-to, 1.8k stars. 1M-parameter OCR model that runs on CPU
- gander by mokshablr, 1.4k stars. Offline Android file viewer for documents, media, archives and code
- citadel by everydaythingssoftware, 1.3k stars. Ebook library manager compatible with Calibre libraries
- make-look-scanned by overflowy, 996 stars. Makes PDFs look like scans, from the command line or in the browser
- office-open-xml-viewer by yukiyokotani, 878 stars. Browser viewer for Word, PowerPoint and Excel files drawn to a canvas
- opentakeoff by Kentucky-ai, 815 stars. PDF takeoff engine for rooms, symbols and materials, exposed over MCP
- PaperPilot by KrushnaVardhanReddy, 786 stars. Local AI assistant for asking questions about your documents
- PdfGptIndexer by raghavan, 677 stars. RAG tool that indexes PDF text with FAISS for fast search
- miro by vincent-uden, 563 stars. Native PDF viewer built on MuPDF, with configurable keybindings
- DocuBrowser by linuxrebel, 557 stars. Local AI search engine that indexes documents on your machine
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