Changelog 2016.05.20 0.4beta
– Find README.md
– Find Manifes.xml
– Find Index file of Components (Only if descriptive)
– User Agent and TimeOut on Python Request
– Updated database from 587 to 656 components
– Fix Cosmetics and Minor Fix.

joomlascan

A free and open source software to find the components installed in Joomla CMS, built out of the ashes of Joomscan.
Features
+ Scanning the Joomla CMS sites in search of components/extensions (database of more than 600 components);
+ Locate the browsable folders of component (Index of …);
+ Locate the components disabled or protected
+ Locate each file useful to identify the version of a components (Readme, Manifest, License, Changelog)
+ Locate the robots.txt file or error_log file
+ Supports HTTP or HTTPS connections
+ Connection timeout

Requirements
+ Python
+ beautifulsoup4 (To install this library from terminal type: $ sudo easy_install beautifulsoup4 or $ sudo pip install beautifulsoup4)

Usage:

Source: https://github.com/drego85