Very early in my career I made friends with the business’s sole Lotus Notes administrator, "the email server guy." He was pretty proud of what it could do, and I sometimes get nostalgic for the admin UI.
I started this project because I was nostalgic for Lotus 1-2-3, but I really really really loved WordPerfect. I'm afraid of starting that project, however, as it might take over my life :) I used to use WordPerfect 5.1 on a 386 PC to edit my school newspaper with multiple columns, graphics, custom fonts, etc. No WYSIWYG, just the power of Alt+F3 (Reveal Codes)!
As a big fan of WordPerfect on my first DOS machine (286 clone), I agree. I respect authors like GRRM for sticking with WordStar, but whenever I get nostalgic and wondering about WordPerfect in DosBox, I remember I use emacs and typst. All the good things about WordPerfect, but vastly superior.
I keep seeing ads for expensive "writerdecks" that run between $500 and $1200 and have a bare-minimum OS that is intended for distraction-free writing. I keep wondering how these are any better than an old laptop, FreeDOS, and WordPerfect 5.2, except as Veblen goods.
It's an incredibly useful piece of software for data wrangling and exploration.
Most notably:
https://github.com/andmarti1424/sc-im
Has been in HN often, most recently:
https://news.ycombinator.com/item?id=47662658
New takes: https://github.com/zaphar/sheetsui https://github.com/garritfra/cell