Developer website: Apptractive
InvisRay makes your windows transparent. This transparency can be adjusted on a per-window basis, and it can be set to automatically make all windows in the background transparent, allowing you to give the main window your fullest attention.
What's New
Version 2.0.1:
- Added keyboard shortcut to toggle FocusRay
- Added support for Apple Pro Keyboard F13-F15 keys
- Fixed several minor bugs