This plugin is outdated and might not be supported anymore
WP Direction Detector

WP Direction Detector

Details
View on WordPress

This plugin auto detects and apply the right direction (RTL or LTR) on post’s titles, bodies and comments.

According to WordPress, adding support for language written in a Right To Left (RTL) direction is just a matter of overwriting all the horizontal positioning attributes of your CSS stylesheet in a separate stylesheet file named rtl.css.
But this solution is working only when you have just an RTL blog (or just an LTR blog using the classical style.css).
One of solutions: We will let WordPress applying the same style.css to both of RTL/LTR posts and this plugin will automatically detect the post language to correct its direction.

It’s just a beta version that I tested with the WordPress default theme, please let me know your feedback with your own complexed css.

Details

Plugin code:
wp-direction-detector
Plugin version:
1.2.1 beta
Outdated:
Yes
WP version:
2.0 or higher
PHP version:
or higher
Test up to WP version:
4.5.32
Total installations:
10
Last updated:
2016-05-24
Rating:
Times rated:
0
direction
language
ltr
right-to-left-support
rtl