Copy/Paste Detector (CPD) for PHP code.
Create deep copies (clones) of your objects
Adds useful features to content modules: status on/off, drag & drop, copy & paste
A slick Joomla attachment extension with drag and drop and copy paste support.
Copy selected rows as Markdown. It's so easy to paste in GitHub issue.
Migrating an HTML blog to WordPress without paying your developers to copy/paste