The plugin is an extension to the free WordPress Support Ticketing plugin "NanoSupport": https://wordpress.org/plugins/nanosupport/
This plugin will enable your user to search the Knowledgebase of NanoSupport while submitting a new ticket. There is a custom search form available to search only the Knowledgebase documents.
The plugin only works when the plugin 'NanoSupport' (v0.6.0+) is installed and activated.
Features
How to use
A detailed User Manual with images provided with the product, mentioning all the details.
Support
Support is FREE. The embedded User Manual noted how you can get support.