Actionbase?:

"allows users to: document and distribute meeting minutes and decisions. Distribute and delegate action items resulting from meetings or other initiatives. Monitor the progress of action items throughout their life cycle including automatic notifications. Securely and seamlessly collaborate on the execution of these action items with individuals both inside and outside of the host organization."

Another future victim of the Exchange/Outlook (and now Sharepoint) combo if you ask me.

08/15/04 update: they've been acquired by Kamoon in March 2003 and now sell to the Lotus user base.