Wondershare PDFelement - All-in-one PDF editor
SocialEngine - Socialengine PHP: Elevating Your Online Community Experience.
Google Docs - Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.
phpFox - phpFox is a powerful social network platform for niche communities
Foxit PhantomPDF - Edit PDF files with our feature-rich PDF Editor. Download Foxit PDF Editor to convert, sign, scan / OCR & more. A speedy PDF Editor alternative to Adobe Acrobat.
EasySocial - Social Network For Joomla to grow your communities with the least time.