Date: 2020jul4 Update: 2025sep16 Q. History: Summary graph of open source spell checkers A. There are several open source spell checkers. This diagram/article show how the major ones are related: - First there were ispell and MySpell. - apsell replaced ispell while remaining backwards compatible. - HunSpell replaced MySpell. - php_pspell is a PHP interface to aspell - Enchant is a wrapper that will use several backends - gspell is a GNOME interface which uses Enchant - davekb.com uses php_pspell - Applications gedit and GNOME LaTax use gspell - Applications Firefox and Thunderbird use HunSpell