Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
Wondershare PDFelement - All-in-one PDF editor
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
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.
ARIS Express - ARIS Express is based on the proven ARIS methodology and industry standards.
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.