What old developer tool do you still miss?
Could be an editor, terminal app, forum, IRC client, old IDE, utility, or even a website.
Some older tools had a weird charm and simplicity that modern software sometimes loses.
Dot matrix printers + fanfold paper
Not a tool per se but I miss Charles Petzold's Programming Windows book in its earliest editions. People forget how difficult it was to find well written programmer documentation in the pre-Internet and dialup-era Internet days. His book was a shining example of how good a programming book could be.
I'm a neovim user not using autocomplete, feels like I'm an outlier in this research