During my internship at Accesspress Themes ( august,2017 – november,2017), I got project to develop FAQ showcase for wordpress. It is my first wordpress plugin developed in team. I did programming part of the project. CSS and UI/UX is developed by other team member. First, we gone with free/ lite version of Everest FAQ and later, we created Premium version of it. Lite Version is available in WordPress repertory and Premium version in codecanyon.net .
Everest FAQ Manager is a Premium WordPress FAQ plugin packaged with 24 beautiful pre-designed templates. With this fully responsive unlimited FAQ builder, you can display your Frequently asked Questions and their answers however you like and configure it to the most. Use different layouts available and showcase your Questions and Answer.
demo : http://demo.accesspressthemes.com/wordpress-plugins/everest-faq-manager/