Ask HN: Is there other software similar to Vim and Emacs?
The two tools I've found so far that come close to this are TiddlyWiki (notetaking) and Vim/Emacs (same text editor niche). TiddlyWiki loses some points on hackability because it's web technology and fairly sandboxed. Vim/Emacs are only for text, obviously. I think what these tools have in common is that they all have a strong core idea (Vim: modal, TiddlyWiki: a quine of tiddlers, Emacs: elisp) that provides insane feature breadth at relatively low cost to learnability.
Other software is usually on a spectrum of low feature count (most tools in the UNIX philosophy) to low understandability (IDEs, most other text editors, all OSes). Then a few rare ones are extremely powerful, but so old and poorly designed that I don't think they make the cut (e.g. Bash in my opinion).
Are there other tools similar to Vim, that maybe even cover other application areas? Doesn't have to be terminal-based. I'd love to hear your opinions!