No lesser authority than the MIT Technology Review says that the Emacs editor has turned 50 years old. But then, it is biased — Emacs was invented in MIT's AI lab.
Excerpt from The Register
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The Register. (2026, November 1). 'Mother of all editors' Emacs is 50. The Register. https://www.theregister.com/applications/2026/11/01/mother-of-all-editors-emacs-is-50/5306727