CalendarReview

Plaxo, Inc. introduced Plaxo 3.0, a major new release of its market-leading “smart address book” service. Plaxo 3.0 is the first online address book and calendar to synchronize between Microsoft, Google, Yahoo!, AOL, Mac OSX, Thunderbird, and mobile phones. The new version makes simple what had until now been impossible: bridging between disparate tools and services with automated, multi-way synchronization — without cables, cradles, or complicated software set-up. Plaxo 3.0, now available for free in seven languages, is currently in beta and accessible to all at http://beta.plaxo.com.

Sunbird 0.5 available for download. Mozilla-style ease-of-use for your calendar. Sunbird™ lets you manage your schedule easily, and store it where you want to.

RSSCalendar on sale on eBay for $50,000.

Update: Bidding has ended without an offer

The auction has started at $50,000.

Update: The winner paid $60,000. 

Kaly of makeuseof.com has these Google Calendar tips:
Google Calendar is definitely one of the coolest online calendars and task-management applications. It has everything an average user may wish for: speed, non-cluttered design and lots of useful and never failing features, i.e. calendar sharing, quick event entry, follow-up reminders (SMS/email), RSS feeds, etc. In addition to it’s standard feature set, there are hundreds of a user-created browser addons (mainly firefox) and problem-specific tips making it even better and more flexible productivity tool. Below, I have listed some of the better ones, if you’re Google Calendar user (or thinking of becoming one) than check them out.