SimpleSpell 1.0 for Mac can be downloaded from our website for free. The application lies within Developer Tools, more precisely General.
From the developer:
SimpleSpell is a collection of Real Studio modules/properties to add spell checking (with suggestions) to any Real Studio project. It utilizes any plain-text dictionary (1 word per line). The base dictionary that is included in the sample project is a Spell Checking Oriented Word List (SCOWL; 160,133 words). The copyright information for this dictionary file is included with the sample project.