Wondershare PDFelement - All-in-one PDF editor
Better Notes - Simple notes app that ties notes together with #hashtags
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.
Whimsical - The visual workspace for teams.
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.
Great F*cking Startup Advice - Strongly worded suggestions for startup founders