Korangar is a Ragnarok Online client written in Rust using Vulkan. It features real-time lighting with drop shadows and a dynamic day-night cycle. It adds a completely new and very customizable user interface and removes limitations of the official client, such as the fixed aspect ratio. It also supports Linux, Windows and MacOS!
If you want to try it out for yourself, check out the Installation page inside the wiki.
I created a Discord server where I regularly post updates about the progress of development and answer any questions you might have.
If you want to contribute to this project, please read this page.