SCOWL is the basis for the official English dictionary in Aspell and the en_US, en_CA and en_AU dictionary in Hunspell. Dictionaries for British English are also available for Hunspell.
- Official Hunspell Dictionaries: readme, en_US, en_CA, en_AU (2017.01.22)
- Additional Hunspell Dictionaries including ones for British English.
- Aspell Dictionaries
You can use this simple web app to check if a word is in the latest dictionary.
If none of the these dictionaries are suitable to your needs you can create your own from the information in SCOWL using this simple tool.