Someone asked this 3 days ago (with few responses), so I'm copy/pasting this from then: * http://www.rackspace.com/apps/email_hosting/ http://www.rackspace.com

Someone asked this 3 days ago (with few responses), so I'm copy/pasting this from then: * http://www.rackspace.com/apps/email_hosting/ http://www.rackspace.com/apps/email_hosting/ (IMAP/webmail) * http://www.sendgrid.com http://www.sendgrid.com (transactional email) * http://www.snapengage.com http://www.snapengage.com (sales/support chats) * http://www.zendesk.com http://www.zendesk.com (basic KB & support tickets) * http://www.github.com http://www.github.com & http://www.repositoryhosting.com http://www.repositoryhosting.com (public & private repositories) * http://www.geckoboard.com http://www.geckoboard.com (dashboard of financial state of the company) And I'm a power user of my own SaaS products: * http://www.w3counter.com http://www.w3counter.com (realtime visitor analytics) * http://www.w3roi.com http://www.w3roi.com (ad performance tracking) * http://www.dialshield.com http://www.dialshield.com (automatically calls high fraud risk customers during the checkout process on my ecommerce sites)