MediaWiki - MediaWiki is a free software wiki package written in PHP, originally for use on Wikipedia.
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.
TiddlyWiki - a non-linear personal web notebook
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Confluence - Confluence is content collaboration software that changes how modern teams work
Wondershare PDFelement - All-in-one PDF editor