Blackbam

For fixing problems with TinyMCE Advanced and qTranslate. Remove line breaks and whitespace, enable custom stylesheets and multiple textareas. Fully customizable.
Plugin Homepage: http://www.blackbam.at/blackbams-blog/2012/01/28/wordpress-3-3-tinymce-advanced-qtranslate-fix-style-problems/
Note: This plugin can be useful, but it is not complete yet, as the combination of the two Plugins can cause a lot of problems. Please report any problems or code improvements you may find.
<h3>Known issues</h3>

TinyMCE Advanced qTranslate fix editor problems

For fixing problems with TinyMCE Advanced and qTranslate. Remove line breaks and whitespace, enable custom stylesheets and multiple textareas.

Soft79

Migrates WPML translations to qTranslate.
Compatible with: 
<a href="https://wordpress.org/plugins/qtranslate-x/" rel="ugc">qTranslate X</a>, 
<a href="https://wordpress.org/plugins/qtranslate-slug/" rel="ugc">qTranslate Slug</a>, 
<a href="https://wordpress.org/plugins/woocommerce-qtranslate-x" rel="ugc">WooCommerce & qTranslate-X</a> (best used in combination with qTranslate X) and 
<a href="https://wordpress.org/plugins/qtranslate-support-for-woocommerce/" rel="ugc">qTranslate support for WooCommerce</a>
Might be compatible with other qTranslate forks and helper-plugins as well, but not tested.
Goodbye WPML, Hello qTranslate!
Note: This plugin will save you a lot of work, but more configuration and tweaking might be necessary.

W2Q: WPML to qTranslate

Migrates WPML translations to qTranslate.

TinyMCE Advanced qTranslate fix editor problems vs W2Q: WPML to qTranslate