The Tiny Search Plugin re-adds search and replace support to the TinyMCE Rich Visual Editor. The TinyMCE Search Replace plugin is normally bundled with TinyMCE, but it has be removed from the version within WordPress. This plugin puts it back in.
Most of the credit for this plugin belogns to Moxiecode Systems, who wrote the Search Replace plugin for TinyMCE, which this plugin uses.
This software is licensed under the CC-GNU GPL.
Hey, I was looking for this. Is there a reason why they remove it (in the core files?)
I suspect they removed it (and other TinyMCE plugins) just to keep the size of WordPress down and to improve load time for the TinyMCE editor.