Here is a guide that shows you how to sign a PDF document in Microsoft Edge. Signatures are basically used to get or provide consent or approval on documents like contracts, legal documents, ...

There’s not much LibreOffice can’t do when it comes to managing documents, from working on manuscripts to coding. However, users will note that while there are formats for math, spreadsheets, writing, ...

The Kindle Scribe is a new hybrid e-reader and e-note. You can view and edit PDF files, freehand draw and also conduct handwriting notes in Kindle books. PDF files are a different beast on the Scribe.

You can digitally sign a PDF in several different ways, including Adobe Acrobat, Apple's Preview app, and mobile apps, among other options.