Today, I released a new version of XrmToolBox. No new tool in this release but you now have the possibility to select the plugins to display and the ones to hide (without removing them from the XrmToolBox folder).
Here is the option dialog
This version includes also improvements for some tool.
Check the download page on CodePlex to view a list of improvements
Next release will probably support Microsoft Dynamics CRM 2015 (even if this version should be able to connect to this version, not tested yet)