piZap - Free online photo editing software.
Wondershare PDFelement - All-in-one PDF editor
Photoshop.com - Photoshop.
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.
Phixr - Phixr is a free online photograph proofreader, an instrument for editing your photos in your web program.
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.