IronPDF - SDK for creating and editing PDFs.
Aspose.PDF for Java - Aspose.Pdf is a Java PDF component to create PDF documents without using https://alternativeto.
PdfPig - Read and extract text and other content from PDFs in C# (port of PDFBox)
iTextPDF - iText offers flexible tools for PDF creation, editing and inspection.
JSignPdf - JSignPdf is a Java application which adds digital signatures to PDF documents.
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.