Solaris is a client sided map mod for 1.20.1 and 1.21.1.
With many qol and visual features such as Hill Shading, toggleable modes for unexplored map visuals (classic black background, starmap, clouds, or a superdense orange and red starmap dubbed Phoenix), black and white mode, waypoints, the ability to export data to use a webmap, and most importantly good api!
Webmap: https://omicron-industries.github.io/Solaris/
You can also gate the features of Solaris using our api and KubeJS plugin to do whatever you want with it.
While mostly a client side mod, if you use the gating API/other server features Solaris needs to be installed on the server.
A PhoenixSuite mod under the
Thanks to Hazelnut for suggesting a bunch of features and helping me tweak the visuals.