I have found a couple of scripts which may be useful to educators and builders in Second Life.
The Linked Prim Animator Lite (LPAL) is a set of open source scripts which enable you to animate linked objects and attachments . LPAL is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation.
Open Babel Fish is an open source babbler, the scripts run on Google Translate and a php script that must be placed on your own web host.
Both scripts can be purchased free from SL exchange. Its really awesome to see such useful tools being released under the terms of the GNU General Public License, so that we can freely modify them to suit our needs and in doing so contribute to the project.