#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
Privacy-first PDF utility (Zero-Server Architecture). Merge, split, compress, and edit PDFs 100% locally on your device. No uploads, no servers, no tracking.
A PDF viewer that seamlessly integrates with any JavaScript project
TeamSync PDF Viewer
Free, open-source PDF workbench for Windows — 20+ tools, digital signatures, OCR, redaction, CLI support.
A Tiny, Researcher-Friendly, AI-Empowered Open-Source PDF&Markdown Editor / 一个小巧、研究人员友好、AI能力集成的开源PDF和Markdown编辑器 / 呱~
Open-source, privacy-first PDF, Word, Excel, PowerPoint, image & audio tools that run 100% in your browser. Merge, compress, edit, OCR & convert PDFs; remove image, GIF & video backgrounds; compress images; cut MP3; transcribe with Whisper. No uploads, works offline. 72 free tools, 16 languages.