Nisus Software has released Nisus Thesaurus 1.0.1, a maintenance update to the company’s fast electronic thesaurus that automatically integrates with any Service aware application including Nisus Writer Express, Mail, TextEdit, Safari, and more. Version 1.0.1 fixes an issue with version 1.0, which inadvertently included an expiration date for the software. Nisus Thesaurus is a free download and requires Mac OS X 10.2 or later.