IssueCopy 1.0.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The application lies within Internet & Network Tools, more precisely Browser extensions. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free Mac application is a product of Patrick Steiner.
From the developer:
Issue Copy is a Safari Extension that inserts buttons for a fast copy of the issue key. In other words, the application boosts the copy/paste operations making them easier to enable. The copied issue keys are sent to the clipboard with just the click of a button.
You may want to check out more software for Mac, such as mini.del.icio.us, RSS Checker or MiniSafari, which might be related to IssueCopy.