MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
Wondershare PDFelement - All-in-one PDF editor
VJmachine - Music Visualizer - Make a VJ show like a PRO. Music visualizer for a unique tight symbiosis of sound and video.
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.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
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.