Powder Software today announced that Summit Groupware 2006 R3, collaboration software for Mac enterprise, including email, calendars, contacts and projects, is available for download. “Summit Groupware 2006 provides the core functions of email, contacts, calendars and projects in one application for business communication and collaboration. New features include: a new WYSIWYG html editing with improved rendering of html email; new calendar components with improved single day, 5 day, 7 day and month views; standardization on Alloy application theme across Mac and Windows to ensure consistency in cross-platform environments; and more.