documenso / documenso

The Open Source DocuSign Alternative.

bwuxqdmgyeub / pdf-annotate

Edit PDFs in-browser: add text, highlights, stamps, freehand ink; fill forms, merge pages, export annotated PDFs.

OpenSignLabs / OpenSign

🔥 The free & Open Source DocuSign alternative

saturneric / GpgFrontend

A modern, cross-platform OpenPGP tool with a unique dual-engine core: switch freely between the battle-tested GnuPG and a modern, memory-safe Rust rPGP backend. It makes encryption, signing, and key management easier and more trustworthy in everyday privacy workflows.

itext / itext-java

iText for Java represents the next level of SDKs for developers that want to take advantage of the benefits PDF can bring. Equipped with a better document engine, high and low-level programming capabilities and the ability to create, edit and enhance PDF documents, iText can be a boon to nearly every workflow.

itext / itext-dotnet

iText for .NET is the .NET version of the iText library, formerly known as iTextSharp, which it replaces. iText represents the next level of SDKs for developers that want to take advantage of the benefits PDF can bring. Equipped with a better document engine, high and low-level programming capabilities and the ability to create, edit and enha

LibPDF-js / core

A modern PDF library for TypeScript. Parse, modify, and generate PDFs with a clean, intuitive API.

vbuch / node-signpdf

Simple signing of PDFs in node.

MatthiasValvekens / pyHanko

pyHanko: sign and stamp PDF files

mratsim / constantine

Constantine: modular, high-performance, zero-dependency cryptography stack for verifiable computation, proof systems and blockchain protocols.

jasonulbright / Spectra-PDF

Free, open-source PDF workbench for Windows — 20+ tools, digital signatures, OCR, redaction, CLI support.

carlos7ags / folio

PDF library for Go: layout engine, HTML to PDF, forms, signatures, barcodes, and PDF/A. Apache 2.0.