There has been a recient review of Mozilla Sunbird which is just a simple calendar and To Do list program from the Mozilla people, bit like the appointment part of Outlook. I like it because its nice and simple and uses open standards.
With it you can have multiple calendars (which Outlook doesn’t do) so you can keep your work life and social separate if you like, or not: its a check box away. You can also import and/or share your calendar using WebDAV which basically lets you write to files on a web server over http. So you can share a calendar online with one or more people. So if you have a group of friends who do stuff together, or just people working on a project together, you can all see what the up and coming events are.
The idea
RSS is all fine and dandy but its designed to show you events that have already happened. What I’d really like is to be able to subscribe to a particular venue, artist, band, club, circle of friends, radio station etc. Basically anything with a schedule/calendar and have it appear in my local calendar. Sunbird seems to allow this. The standard it stores its calendar information in is called iCal. I had a quick sniff around and there is no a PEAR or general PHP support for this format. Be nice if there was an XML version of it (Sunbird has an option in the export but its not implemented it would seem)
This is a not to self: Write PHP iCal object