Zendesk recommends our themes to their marketplace, You can use the Free version of the theme from Zendesk marketplace – View theme

Supercharge your Zendesk Guide with Green – A Powerful Multi-concept Theme for all agencies.
Create a modern, professional, and engaging Support Center with Green, a fully responsive theme for Zendesk Guide.

Theme Features

You can easily customize the theme in the setting(DIY) option. (No need to touch the code)

100% Fluid Responsive – Fits any device perfectly
Powerful Theme setting options
Full width / Boxed width (layout)
Fixed header
Parallax effect at hero banner
LineIcons and FontAwesome icons included
Shortcodes elements included
Category blocks with accordion
Contact blocks
Translations (You have to use the DYNAMIC CONTENT placeholders instead of static text)
Google Fonts included
User-Friendly Code
Cross Browser Support
Easy to Customize
Well Commented Code
Many more…