Amethyst Mod Manager has been released in version v2.0.0 - the big UI rework the developer already announced back in v1.3.13.
The interface was rebuilt from scratch in Qt to fix performance and scaling issues of the old framework. Overlays now open as tabs that can be freely moved, docked, or undocked into their own windows. Also new is an export code feature that lets you share a complete modlist, including load order and FOMOD settings, as a simple text code.
Additions
- Added Pragmata support
- Added support for adding and running jar files
- Added an option to add custom regex rules to strip data from archive names
- Added a profile export code option for quickly sharing mods in a profile
- Added filter tags to the modlist search bar as an alternative way of filtering the modlist
Changes
- Removed the generate separators function and the BepInEx wizard
- Removed the Archive tab - archive contents now display via the mod files tab
- plugins.txt is now copied instead of symlinked to prevent cases where a game could not read the symlinked version
- Reworked the filemap rebuild process - toggling/moving mods on large modlists should be faster and freeze the UI less
Bug Fixes
- Fixed an issue where files in a FOMOD wouldn’t install if the moduleconfig and files in the archive had mismatched casing
- Fixed an issue where mods that contained files with non-UTF-8 characters would not work and would block the filemap cache from being built

Source: GitHub