Version 0.3 of package Jit-Spell has just been released in GNU ELPA. You can now find it in M-x list-packages RET.
Jit-Spell describes itself as: =========================== Just-in-time spell checking =========================== More at https://elpa.gnu.org/packages/jit-spell.html ## Summary: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ JIT-SPELL — JUST-IN-TIME SPELL CHECKING ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ jit-spell is a spell-checking package for Emacs. It highlights all misspelled words in a window, just like a word processor or web browser does. <https://raw.githubusercontent.com/astoff/jit-spell/images/screenshot.png> This behavior is different from the built-in Flyspell package, which only checks words as the cursor moves over them. Moreover, unlike Flyspell, jit-spell communicates with the spell-checking subprocess entirely asynchronously, which can lead to a noticeable performance improvement. jit-spell is part of [GNU ELPA] and can be installed with `M-x package-install RET jit-spell RET'. [GNU ELPA] <https://elpa.gnu.org> ## Recent NEWS: [Not available 🙁]