Vote for AutoSpell for OWA

Add full-featured spell checking to OWA for all of your clients regardless of web browser or platform! AutoSpell for OWA installs into any Exchange Server configuration and works with absolutely no client-side installation. Multiple-language support and custom dictionaries ensure that your entire enterprise will maintain your corporate image. Includes ActiveX DLL Server that integrates into OWA and requires no client installation.

Supported operating systems: Windows NT/2000, Exchange 5.5, Exchange 2000, including Service Packs 1, 2 and 3
Client Support: For Windows: Internet Explorer, Netscape, Mozilla Firefox
For Macintosh: Safari, Internet Explorer, Netscape, Mozilla Firefox, Camino