I created a Mac pasteboard (clipboard) application. While it's not yet very versatile, as hotkeys are fixed and cannot be customized, I am releasing it for public use.
Download: http://ytyng.com/develop/YClip-031.zip
This application monitors the clipboard and converts formatted text into plain text. It also keeps a history of the clipboard content, allowing you to restore it later.
When you launch the application, it will reside in the menu bar.
Click the menu bar and select Open Window or press Command + Option + V to open the main window. This hotkey is fixed and cannot be changed.
0.3.1 … 2014-03-24: Added a feature to process clipboard content through an external script via standard input/output 0.2.0 … 2014-02-23: Fixed an issue where the text area would become too large
Download: http://ytyng.com/develop/YClip-031.zip
Previous Versions
Download: http://ytyng.com/develop/YClip-020.zip