DHH.

Creator of Ruby on Rails. The tools they actually ship with:

Ruby on RailsThe one-person frameworkGETHotwireHTML over the wireGETKamalDeploy web apps anywhereGETNeovimHyperextensible Vim-based editorGETOmakubAn omakase dev setup for UbuntuGETSQLiteSmall. Fast. Reliable.GETBasecampProject management, refreshingly simpleGETHEYEmail at its bestGET