JConverter
JConverter is a Joomla component (3.x) using which you can convert any Wordpress blog into Joomla within minutes. It can import posts, pages, menus, users, categories, comments and even images from Wordpress.
Features
Joomla 3.x/2.5.x compatible.
Import users from Wordpress and set a common new password.
Import published posts and pages with categories.
Import menus from Wordpress keeping same hierarchy (NEW)
Import approved comments (in JComments extension)
Import images from Wordpress
Support conversion of Wordpress newline feeds into Joomla format.
What you'll get?
Instructions file
JConverter component installer
Limitations
Since Joomla doesn't support multi-category association for articles, imported posts will be associated with only one category.
Both Joomla and Wordpress installation (databases) should be on same server. It is not a limitation of JConverter but most hosting companies block external access to DB via firewall.
JConverter currently supports import of native Wordpress content, e.g. posts and pages. It does not support import of custom content types, e.g. galleries, products etc.
IMPORTANT NOTES:
No refund can be made for purchases because of any of the limitations mentioned above.
From 1.7 version onward, support for Joomla 2.5.x is removed. You can still purchase JConverter and request for a 2.5 compatible version however it will not have any new functionality supported from JConverter 1.7 onward.
CHANGE LOG
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1.8 (31st Jan, 17) - Misc bug fixes and improved stability.
1.7 (29th Oct'15) - Added support for importing menus from Wordpress and few minor fixes.
1.6 (27th April'15) - Fixed the following issues
1) Import issue with Joomla 3.4+ and
2) Read more tag issue
1.5 (10th Oct) - Support for importing images from Wordpress to Joomla, Support for same URL alias from Wordpress to Joomla and minor bug fixes.
1.4.1 (14th August, 2014) - Fixed an issue with import of username in JComments tables if the username has special characters.
1.4 (24th January, 2014) - JConverter 3.x compatible version now supports importing comments in JComments.
1.3 (2nd September, 2013) - Fixed a minor bug in 3.x version due to which some users were not being imported from wordpress.
1.3 beta (14th August, 2013) - Fixed an issue with import. This version also generates article aliases while storing them.
(7th August, 2013) - Released Joomla 3.x compatible version.
1.2 (Dec 10, 2012) - Fixed a bug in users import where users import was failing if the database prefix is not wp_
1.1 (Oct 16, 2012) - Fixed import of correct post/page creation date from wordpress in Joomla. Minor UI enhancements.
1.0 (Aug 29, 2012) - Released with 2.5 Joomla and Wordress 3.x compatibility with new features mentioned above.
You'll get a ZIP.