Ayebare Mucunguzi Brooks

This plugin gives every widget extra language control fields that let you control the languages that the widget or sidebar will appear on when using WPML plugin. 
The plugin was adopted from alanft’s amazing widget logic plugin and stream lined to make it an extremely light weight plugin with only one purpose: to filter widgets and sidebars according to WPML languages.
To get quick support for this plugin, submit a support ticket <a href="http://zanto.org/support" rel="nofollow ugc">here</a> 
To keep up to date with the latest WordPress translation, localization and Internationalization news, subscribe to our blog at <a href="http://zanto.org" title="WordPress translation, Internationalization and localization" rel="nofollow ugc"> Zanto</a> 
For more free and premium multilingual plugins for WPML, and Zanto visit our<a href="http://shop.zanto.org" title="wordpress multilingual plugins" rel="nofollow ugc"> Multilingual plugins page</a>. all GPL

WPML Widget Filter

WPML Widget Filter lets you control on which languages widgets or sidebars appear when using WPML Translation plugin.

ThemeCatcher

With this add-on, a form can be translated into multiple languages using WPML. Gone are the days of having duplicate forms for each language!
<h3>Features</h3>
Translate unlimited forms into other languages through WPML.
Deep integration
All user-facing strings are fully translatable, including all form settings, fields settings and validation error messages. Emails sent to users can also be translated, along with the confirmation (success) message shown after the form is submitted.
Advanced WPML compatibility
Compatible with both the String Translation workflow, and the Advanced Translation Editor.
Datepicker/timepicker support
Automatically converts the locale of the datepickers and timepickers into the current WPML language. The dates and times will be automatically formatted according to regional standards.
<blockquote>
Note: this plugin is a free add-on for the <a href="https://www.quform.com/" rel="nofollow ugc">Quform Premium WordPress Form Builder plugin</a>. For this plugin to function, Quform version 2.16.0 or later, WPML version 3.2 or later, and the WPML String Translation plugin must be installed.
</blockquote>

Quform WPML

Translate Quform forms into multiple languages using WPML.

WPML Widget Filter vs Quform WPML