Spell check for Swing and JavaFX applications

As you type mode

As-you-type spell checking with full in-document highlighting for Java Web (JSP & JSF) and Java Desktop (Swing only) application developers. Highlight users spelling errors as they type, paste or edit text within your app. Spelling suggestions are provided in a right click context menu.

RapidSpell as you type feature
Dialog spell checking

Dialog mode

The dialog user interface provides all the common spell checking features such as, add (to user dictionary), change, ignore, ignore all, undo, options and smart suggestions.

Broad compatibility

RapidSpell Desktop Java was designed to JDK 1.2.2 spec and supports any version after that.

Java specifications
Dictionaries available for RapidSpell Web ASP.NET

Global reach

4 English language variations (US, UK, CA, AU) included free of charge with 17 extra dictionaries also available, including medical and legal. All of which are modifiable.

Free Trial

Please download the evaluation ZIP.


With full API access, customizations can be made to behavior such as working with user dictionaries in a database format instead of the default text file format, altering the parser to check for offensive language or changing the way words are identified and their corresponding suggestions.

In addition, developers can use the core spell checker functionality through the RapidSpellChecker class, allowing usage without the GUI in console and server applications for example.

Customization feature

Custom dictionaries

The user interface can easily be restyled by extending its class and overriding the design method (an example of this is included). The spell checker engine can be completely separated from the GUI allowing you to customize behavior.


RapidSpell has built-in multi-lingual support, offering the GUI in several languages. Multiple non English language dictionaries are available including Medical and Legal dictionaries.

Dictionary Manager

The Dict Manager tool (included free of charge) provides Java Swing & JavaFX and JEE developers with a user friendly method of maintaining the dictionaries. Add, lookup and remove words. Create new dictionaries or merge existing word-lists.

'Sounds-like' or hashing suggestions

As each user and each application is different, sometimes you need to offer spelling suggestions tailored to your target audience. RapidSpell offers two different suggestion mechanisms to find the best suggestions for words.