magit (https://magit.vc/ https://magit.vc/) - a git interface for Emacs. Hyper-interactive and ergonomic, feels like vim for git. Highly pleasurable to use and

magit (https://magit.vc/ https://magit.vc/) - a git interface for Emacs. Hyper-interactive and ergonomic, feels like vim for git. Highly pleasurable to use and makes you significantly more efficient. SLIME (https://common-lisp.net/project/slime/ https://common-lisp.net/project/slime/) - a Common Lisp development environment, also for Emacs. Comes with a REPL, interactive debugger (way better than gcc), the normal IDE-like experience you know and love, and this fantastic tool called the Inspector that is basically an interactive, modal editor for your program data. The Inspector is one of the most novel and useful tools that a development environment can have... and I've never seen another IDE that has anything resembling it. SLIME gives you a highly interactive and fluid development experience that I've never seen anything else come close to. Spacemacs (https://www.spacemacs.org/ https://www.spacemacs.org/) - a starter kit for Emacs that gives you a sane out-of-the-box configuration and an optional pre-configured Evil (vim keybinding emulation) setup. Much more flexible and powerful than Vim (elisp, while a bad general-purpose language, runs circles around vimscript) and much better ergonomics than vanilla Emacs (Emacs' mode-less interface is just straight-up worse for your hands than Vim's modal interface).