PDF-Shuffler - PDF-Shuffler is a small python-gtk application, which helps the user to merge or split pdf...

PDF Joiner - This online tool allows you to join several PDF documents into a single file, free of charge.

Tesseract - Tesseract is an optical character recognition engine for various operating systems

PDFChef Merge PDF - PDFChef Merge PDF is an online tool that allows you to merge multiple PDf files into one quickly and securely.

Amazon Textract - Easily extract text and data from virtually any document using Amazon Textract. Textract goes beyond simple optical character recognition (OCR) to also identify the contents of fields in forms and information stored in tables.

PDFill - Open, View, Edit, Save and Print PDF Documents without Adobe Acrobat