Wondershare PDFelement - All-in-one PDF editor
Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
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.
Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
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.