DotLiquid is a .Net port of the popular Ruby Liquid templating language. It is a separate project that aims to retain the same template syntax as the original, while using .NET coding conventions where possible.
It's the .NET Port of Tobias Lütke's Liquid template language.
Liquid is an open-source template language created by Shopify and is written in Ruby. It is the backbone of Shopify themes and is used to load dynamic content on storefronts.