Free web software for signing PDFs and also organize pages
PDFsam, a desktop application to split, merge, mix, rotate PDF files
X-Plane plugin that displays a tablet to aid VR usage
A Privacy First PDF Toolkit
PDFCraft is a free, privacy-focused PDF toolkit
borb is a library for reading, creating and manipulating PDF files
Python bindings for MuPDF's rendering library.
iText for .NET is the .NET version of the iText library
A high-quality tool for convert PDF to Markdown and JSON
iText for .NET is the .NET version of the iText library
JavaScript OCR and text extraction for images and PDFs
Open source DocuSign alternative
An ebook reader application supporting PDF, DjVu, EPUB, FB2, etc.
PDF scientific paper translation with preserved formats
Split and merge PDF files on any platform
Fidus Writer is an online collaborative editor for academics
Nextcloud app to sign PDF documents
A privacy-first, open-source platform for knowledge management
Kimai is a web-based multi-user time-tracking application
Self-hosted collaborative bookmark manager
Online service for PDF conversion (to PDF)
CERCA – Citation Extraction & Reference Checking Assistant
Free and open-source PDF signing and verification application.
Windows eml and mbox viewer.