Unmaintained WordPress plugin: inserts ASCII art in HTML comments into your source code. Select from dozens of artworks, or insert your own. A quirky surprise for anybody inspecting your HTML code
Source code for 'Pro WordPress Theme Development' by Adam Onishi
Twenty Seventeen is a theme now included in all WordPress installs. To report any issues please go here: https://core.trac.wordpress.org/newticket
Code-prettify is a wordpress plugin. This plugin using google-code-prettify to highlight source code in your posts.
Removes unnecessary code parts from the WordPress source code
An open source eCommerce plugin for WordPress.
Yoast SEO for WordPress
Example of integration SurveyJS: Survey Library and Survey Creator into WordPress