No More New Window is a Firefox add-on, can remove the "Open in new window" item from the context menu.
For those who are frequent users of "Open Link in New Tab" menu item (in the context menu for HTML links and in the bookmarks drop-down menu), addon makes browsing a bit more handy by removing the neighbor "Open Link in New Window" item.
This way, you can get rid of rare annoying mis-clicks and subsequent opening of new browser window instead of opening a new tab.

Requirements:
* Firefox

The license of this software is Freeware, you can free download and free use this browser plug-ins software.