SpaceShare Green Travel -- carpool, community building
SpaceShare Green Travel builds ride- and room-share tools for festivals and conferences. Our sister effort Verdant Event builds complete websites for conferences with greening tools integrated.
We highly recommend Green Mary for the San Francisco Bay area.
For catering, Work of Art has been recognized as a San Francisco Green Business since 2005.
La Bonne Cuisine Catering, a 5-star French, full service Catering and Event Planning company has been serving the corporate and private clientele of the Greater Bay Area since 1995.
Companies providing some of the services required for a green event are expanding very quickly -- and often you'll want to look more local than this guide allows. Googling may be your best bet, but as we find higher-quality information we'll put it here.
And looking for resources to green your contribution, check out Blue Green Meetings starting point for companies supplying the events industry.