Rajesh

WPGoogleLangTransliteration Plugin offers Complete language transliteration support for your wordpress blogs in Tamil, Telugu, Hindi, Malayalam, Kannada, Arabic, Nepali, Marathi, Punjabi, Bengali, Gujarati and Urdu.
<a href="https://downloads.wordpress.org/plugin/WPTransliteration.zip" rel="nofollow ugc">Download now!</a>
<a href="http://indiafascinates.com/wp-google-language-transliteration-plugin/" rel="nofollow ugc">Plugin URL</a>
Some features:
<pre><code>* WordPress Post or Page Content in supported languages
* WordPress Post or Page titles in supported languages
* WordPress Post or Page URL slugs in supported languages
* WordPress Post Categories and Tags in supported languages
* Lets you blog/site visitors to comment in supported languages
</code></pre>

WPGoogleLangTransliteration

WPGoogleLangTransliteration Plugin offers Complete language transliteration support for your wordpress blogs.

Adadaa

Ada Tamil Writer is a powerful plugin that allows you to type in Tamil directly from your WordPress admin area. The plugin adds a custom admin bar menu where you can easily switch between different Tamil keyboard layouts, such as Thaminglish, Tamil99, and Typewriter.
Key features: 
* Quick switch between Tamil keyboard layouts in the admin bar. 
* Multiple Tamil keyboard layouts supported – including Thaminglish, Tamil99, and Typewriter. 
* As admin, you can set the default keyboard layout for the site and visitors can configure their own preference. 
* You can type Tamil directly within many fields of WordPress without installing any Tamil fonts 
* Let your site visitors type Tamil – such as in Comments – without needing them to install anything 
* Customizable settings for logged-in and non-logged-in users. 
* Supports English typing as well. 
* Requires the Classic Editor plugin for optimal functionality. 
* Clean and modern design that integrates seamlessly with the WordPress admin interface.
<h3>License</h3>
This plugin is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This plugin is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Ada Tamil Writer

Ada Tamil Writer provides easy Tamil typing options in WordPress, with layouts like Thaminglish, Tamil99, and Typewriter.

WPGoogleLangTransliteration vs Ada Tamil Writer