Jotdown

Jotdown is an open-source document manager and PDF reader built for researchers, students and academics. It works 100% offline and is focused on privacy — no account required, no data leaves the device. Features: PDF reader with text-layer extraction OCR via open-source PdfBox Sticky note annotations and vector drawings (stylus + palm rejection) Academic citation (fichamento) generator Export to Markdown (.md), TXT and PDF ABNT citation format support Local folder organisation system Offline dictionary (Portuguese / English) Backup and restore (local ZIP) Dark mode support