Edtr.io - Intuitive WYSIWYG web editor, open source & fully adaptable.
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.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
Wondershare PDFelement - All-in-one PDF editor
MathType - The Professional version of Equation Editor- MathType is a powerful interactive tool for Windows and Macintosh that lets you create mathematical notation for word processing, web pages, desktop publishing, presentations, and for TeX, LaTeX, and Math…
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.