PDF Ink Alternatives

Xodo is the ultimate cross-platform PDF viewer and annotator. Powerful, fast, and optimized for all phones and tablets, Xodo makes it easy to access, edit, mark up, sort, share, sync, manage, sign, and more with even the most complex PDF documents.

With PDFill you can create, fill, delete and submit PDF form fields; insert new formatted text, check, image, hyperlink, whiteout, highlight, drawing, comment and annotation anywhere in the document; save, print or email the filled and password-protected PDF; save and resume...

Enhance productivity with refreshingly simple, versatile, and powerful document editing. PDFpen is a comprehensive, all-purpose PDF editing toolkit for macOS. Markup, edit text, OCR, sign forms, merge documents and extract pages.

PoDoFoBrowser is a graphical browser and editor for the object structure of PDF files.

With iAnnotate you can read, annotate, and share PDFs, Microsoft Office files, images and web pages!

Notes Pro is a must-have app for anyone who reads or annotates PDF documents or to create/edit notes and formal documents in open standard format which can be opened and edited in any standard word processor like Pages, Microsoft Word or Open Office.

Good Writer is a must-have app for anyone who reads or annotates PDF documents or want to create or edit notes and formal documents in open standard format which can be opened and edited in any standard word processor like Pages, Microsoft Word or Open Office.

View and add comments to Adobe PDF files and fill interactive forms on any Android phone or tablet.

Utilize pdf-notes to manage all the pdf files on your iPhone and iPad. Fast display, quick page-turning even a thousand pages, useful finger-writing and email your notes to your friends.