illuminate.vim - (Neo)Vim plugin for automatically highlighting other uses of the word under the cursor using either LSP, Tree-sitter, or regex matching.
hexokinase.vim - (Neo)Vim plugin for asynchronously displaying the colours in the file (#rrggbb, #rgb, rgb(a)? functions, hsl(a)? functions, web colours, custom patterns)
Neovim plugin for building a sync base16 colorscheme. Includes support for Treesitter and LSP highlight groups.
Location and syntax aware text objects which *do what you mean*
Wisely add "end" in Ruby, Vimscript, Lua, etc. Tree-sitter aware alternative to tpope's vim-endwise
Automatically regenerate your tags on file changes https://rubygems.org/gems/tagrity
Automatically source your init.lua when it gets modified anywhere.