Wondershare PDFelement - All-in-one PDF editor
Annotate.tv - Optimize your learning on YouTube
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.
Slid - Capture knowledge from online videos, courses, and webinars
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.
Simply.Digital - Goals & Tasks - Todo list to track your time & help set meaningful deadlines