VirtualDJ - Virtual DJ Software - MP3 and Video mix software for DJs
Wondershare PDFelement - All-in-one PDF editor
MixPads 2 - MixPads 2 is an elegant mobile app that works as a music creator and helps you to access musical communities on social platforms.
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.
drumbit - A very easy to use drum machine.
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.