Compare software

Lem vs Doom Emacs: catalog facts
Lem	Doom Emacs
Free Free and open source.	Free Free and open source.
macOS, Linux, Command line	macOS, Linux
Extensible in Common Lisp while running Emacs-like and Vim-like modes	Modular setup where features are switched on per module Large, active community and long commit history
Extending it requires learning Common Lisp GUI is in transition from SDL2 to a webview version	Requires GNU Emacs to be installed first Opinionated defaults take time to learn
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.