• JTS-sa
  Joomla! Tools Suite -standalone version, JTS-sa installs outside of the Joomla! framework to provide -Post installation Health Checks, Installation Assessment, Security Auditing, Core-File modification Auditing, File-System Auditing, Extension Reporting and dataBase Auditing facilities. (includes embedded HISA-sa, see below) Being installed independently of Joomla! ensures that even in cases of no Admin Site access, JTS-sa may still be able to assist in problem resolution.
  Joomla! Version Support:  
   -  v1.0.11 through v1.0.13 only.
  
  
• HISA-sa
  
  Health, Installation and Security Audit -standalone version is a sub-project of JTS-sa containing a easy to use, no installation required, single file script providing both, -Pre and -Post installation auditing, while not as fully featured as JTS-sa (see above), HISA-sa covers a comprehensive set of Audit and Reporting tools to assist in assuring and  troubleshooting Joomla! instance environments.
  Joomla! Version Support:  
   -  v1.0.11 through v1.0.13 only.
  
  
• JTS-c
  Joomla! Tools Suite -component contains a similar set of -Post installation utilities and assurance checks to JTS-sa providing Joomla! Super Administrators with a quick, simple and close-to-hand Auditing and Reporting tool, from right inside Joomla!
  Joomla! Version Support:  
   -  v1.0.11 through v1.0.13
   -  v1.5.0 (Legacy Mode)
  
  
• JTS-snap
  Joomla! Tools Suite -snapshot is a Joomla! Control Panel module, when published to the cpanel position, the Super Administrator has access to the general configuration and security status of the Joomla! instance. When installed with JTS-c, the last Assurance Rating is also displayed (JTS-c is not required for JTS-snap to function though)
  Joomla! Version Support:  
   -  v1.0.11 through v1.0.13
   -  v1.5.0 (Legacy Mode)
  
  
• JTS-assured
  Joomla! Tools Suite -assured is a Joomla! Site module, when published to your site the module has two "modes" of display - either a simply "Download JTS and Logo Promotion ( Default) or displays your JTSc Assessment Rating if the rating is above 90%, if below 90% it is configurable to either display nothing or the JTS logo. (If JTSc is not installed, the module will simply display the JTS logo with a link to the JTS JoomlaCode? Project page.) Pre-Configured or Custom Colour is available in the Module parameters.
  Joomla! Version Support:  
   -  v1.0.11 through v1.0.13
   -  v1.5.0 (Legacy Mode)

• JTS-post
  Joomla! Tools Suite -post is a standalone, single script utility designed to assist end-users to provide accurate and useful configuration and diagnostic information within Joomla! Forum posts. Simply upload the single file to the Joomla! "/" directory and open in a browser. Once loaded, select the level of detail that you wish to provide in the post, optionally enter details of the problem observed, any error messages and corrective actions already taken, select "GENERATE POST" and pre-formated forum post content will be generated ready for you to Copy and Paste into a forum post.
  Joomla! Version Support:  
   -  v1.0.x
   -  v1.5.x
  

More Detailed Discussion Found at the Joomla! Forums