Phiki has been out there in the wild for quite some time now and there are plenty of websites already using it.
- ryangjchandler.co.uk uses Phiki to syntax highlight code snippets in blog posts.
- Mailviews uses Phiki for code snippets inside of their component library.
- Prezet uses Phiki to syntax highlight their documentation and code snippets in userland applications using the package.
- Filament uses Phiki to power its
CodeEntryinfolist component, and to syntax highlight code samples in its documentation.