I’ve never been a big fan of Evite. It’s fine, but it’s clunky, gaudy and rife with promotions and ads. I’ve never looked very hard, but I’ve never found a suitable alternative. Upcoming is really for public events–its private event functionality requires everybody to register and log in, which doesn’t cut it.
I was interested, then, to watch a demo of MyPunchBowl.com on Robert’s blog:
There are typically lots of pieces to organize: picking a date, sending invitations, choosing catering and entertainment, purchasing party supplies, and renting party equipment just to name a few. It can be a time-consuming process, and it usually isn’t much fun.
To solve this problem, we’ve created MyPunchbowl, a new approach to at-home party planning that is easy, comprehensive, and personal. MyPunchbowl provides software for every stage of a party. If you use MyPunchbowl.com to plan your party, you’ll have a better party.
I haven’t tried it yet, but I like the Flickr integration and the well thought-out workflow.
DarrenBarefoot.com 
Hey Darren,
You might want to check out Planypus. Rather than the traditional old figure out the details and then invite your friends, planypus introduces the idea of _group_ planning. Use dynamic chat, voting, and a wiki like planspace to make plans, and it integrates with email, rss, sms, and online calendars. Let me know what you think! thanks.
I tried both MyPunchBowl and Planypus and preferred the Punchbowl because it is easier to use – especially for the non-nerd crowd – and it looks better. The date voting function is also much better and better laid out.
I use a site http://www.events-x.com . It very simply and clearly.
Create the guest list, choose an invitation card, send invitation by Email.