Japh

A supplement to the Theme-Check plugin that adds checks for ThemeForest’s WordPress Theme Submission Requirements, and removes checks that aren’t relevant in that context.
The <a href="https://wordpress.org/plugins/theme-check/" rel="ugc">Theme-Check</a> plugin is required for this plugin to work.

ThemeForest-Check

it helps a lot to discover problems in your theme. It's a perfect tool that everyone who is developing a theme for themeforest should have. Great!

very useful

A supplement to the Theme-Check plugin that adds checks for ThemeForest's WordPress Theme Submission Requirements.

tristup

Simple Theme Demo Importer plugin will help to import the theme demo content based on the Demos are available. Easily customizable for the Theme Developers to integrate as theme recomended plugins. 
The New version of plugin is enabled with the option to import the demos from Plugin or Theme folder. 
Simple Theme Demo Importer, to help developer most to reduce the overhead on demo import.
<h3>Major features in Simple Theme Demo Importer include:</h3>
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Now demo can be set from the Theme Folder itself. [ New ]
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Just Copy the Importer Folder in your theme Folder. [ New ]
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Deactivation Hook Added [ New ]
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Status Report page added [ New ]
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Easy to customize to use for any theme.
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Fully JSON based settings for the Required Plugins to be installed before demo import.
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Theme Setup JSON
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Multiple Menu Location allowed [ Based on your theme ]
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Front and Blog Page settings using theme JSON file
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Revolution Slider Support Integrated
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Redux Theme Option Panel Support Integrated
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Widget Import Support Integrated [ .wie file for widget import ]
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Demo Import data is for Unit Test Data of WordPress
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Redirected to Landing Page on Activation
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<h3>Premium Version</h3>
Coming Soon [ More Query please <a href="mailto:tristup@gmail.com" rel="nofollow ugc">click here</a> ]
<ol>
<li>
Layer Slider Import Option Added. Now you can export and import Layer Slider Files.
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PHP Settings JSON. You can mention PHP Settings required to import the data. E.G : Upload Size, Folder Perssions etc.
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PHP Settings will show notices, and will disable the <code>Import</code> Button if not satisfied.
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Already Imported Notice will be shown if any demos is already imported.
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Message Customization [ JSON File ].Error or Notice messages can be customized using JSON file.
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<h3>Recommended Plugins</h3>
The list of recomended plugin are given below :
<ol>
<li>
<a href="https://wordpress.org/plugins/widget-importer-exporter" rel="ugc">Widget Importer & Exporter Plugin</a>, Widget Import file with extension of .wie
</li>
<li>
<a href="https://wordpress.org/plugins/redux-framework/" rel="ugc">Redux</a>, Theme Option Panel.
</li>
</ol>
<h3>Files</h3>
<ol>
<li>demo_info.json : Demo Related JSON Structure</li>
<li>plugin_check.json : Required Plugin checking JSON Structure</li>
<li>screenshot.png : Default Screenshot for demo</li>
<li>theme_data.xml : Demo Content for specific demo</li>
<li>widget_data.wie : Widget Import file</li>
<li>redux.json : Redux Theme Option import file</li>
<li>free-slider-to-test.zip : Revolution Slider Demo file for test</li>
</ol>

Simple Theme Demo Importer Plugin

Good Plugin to use

Simple Theme Demo Importer plugin will help to import the theme demo content based on the Demos are available. Easily customizable for the Theme Devel …

ThemeForest-Check vs Simple Theme Demo Importer Plugin