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Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
Wiki.js - An open source, modern and powerful wiki app built on Node.js, Git, and Markdown.
Wondershare PDFelement - All-in-one PDF editor
TiddlyWiki - a non-linear personal web notebook
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.