PUBLIC MARKS with tags open-source & email

Chandler 0.6 delivers an experimentally usable calendar for individuals and small workgroups. It is a test release for collecting feedback based on real usage. In addition to basic calendaring, advanced features include: recurring events; time-zones; overlayed, multiple calendars; and managing a single event across calendars.

PHPlist is a double opt-in newsletter manager. It is written in PHP and uses an SQL database for storing the information. PHPlist is software that runs on a server. PHPlist is designed to assist you to stay in touch with your audience, without flooding them with information they don't want. PHPlist is an essential tool for anyone who is serious about creating, capturing and maintaining an offline audience, and will help you increase traffic to your website. And the most amazing thing of all: IT'S FREE.