Unison will replace Exchange and Notes (Score 1)

Unison launched in March (www.unison.com) and does unified communications out of the box -- not just email, but also PBX/telephony/IM/groupware/LDAP. It has a Linux server and Windows/Linux client. It is easier to deploy and use, more powerful and less expensive than the MS and Lotus products, which were designed for large enterprises, not SMBs. Rurik Bradbury