OpenSignLabs / OpenSign

🔥 The free & Open Source DocuSign alternative

UglyToad / PdfPig

Read and extract text and other content from PDFs in C# (port of PDFBox)

pdfcpu / pdfcpu

PDF tooling for Go and the command line.

pdf-rs / pdf

Rust library to read, manipulate and write PDF files.

chinapandaman / PyPDFForm

🔥 The Python library & CLI for PDF forms.

empira / PDFsharp

PDFsharp and MigraDoc Foundation for .NET 6 and .NET Framework

podofo / podofo

A C++17 PDF manipulation library

tooladda-online / pdf-merge

PDF Merge — Combine multiple PDF documents into one file with our pdf merge free tool. Drag to reorder, preview pages, rotate files — everything runs in your browser with no upload and no watermark. Need to merge PDF and JPG or merge PNG to PDF first? Convert your images, then merge the PDF here. Free on ToolAdda.online.

tooladda-online / compare-pdfs

Compare Two PDFs — Upload two PDF files and see exactly what changed: added, removed and edited text, visual differences, layout shifts and inserted or deleted pages. Text, visual, page-by-page and layout comparison in one tool — no Adobe Acrobat, no signup, and your documents never leave your device. Free on ToolAdda.online.