IronPDF - SDK for creating and editing PDFs.
PDFJet - PDFJet is a mobile and cloud PDF Library for Java and .NET to generate PDF documents.
Docotic.Pdf - Docotic.Pdf is a high-performance C# PDF library for .NET. You can use it to create, read, and edit PDF documents in .NET Core, ASP.NET, Windows Forms, WPF, Xamarin, Blazor, Unity, and HoloLense applications.
PdfPig - Read and extract text and other content from PDFs in C# (port of PDFBox)
Aspose.PDF for Java - Aspose.Pdf is a Java PDF component to create PDF documents without using https://alternativeto.
VeryPDF PDF Editor - VeryPDF PDF Editor can edit the PDF content, page sequence and annotation, create PDF and convert PDF.