Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fill forms, print, flatten, and open password-protected PDFs without a subscription.
Read and extract text and other content from PDFs in C# (port of PDFBox)
PDFsharp and MigraDoc Foundation for .NET 6 and .NET Framework