Bonus Tools is a free collection of useful Maya scripts and plug-ins. On this page you will find a series of links to various tutorials, demonstrations and updates related to Maya Bonus Tools. Recent updates include e.g. Scene Annotation, Pattern Rename or Time Warp Animation. BonusTools has also been completely overhauled in 2012. This includes general reorganization as well as removal of obsolete tools. Additionally there have been updates and bug fixes for many of the tools including but not limited to Store Transform Values / Pose, Snap and Lock Curve Points or Adjust Clipping Planes.
This tool is compatible with Windows platforms, Linux and also Mac OS. Complete list of updates you will by following the link at the end of this article.
Source: Autodesk