From ArborWiki

A list of tech companies in downtown Ann Arbor.

See also: How to ArborWiki your company

Here you go:

• Arbor Networks
• Blue Newt Software, graphics software
• Google
• HealthMedia
• Keystone Media, eMarketing, web design and development
• The Linux Box, consulting, development, and training with an open source emphasis
• Northtech Systems, IT services: LAN administration, internet strategies
• Pure Visibility, search engine marketing
• Sagient, web strategy, design, development, and management
• SRT Solutions, software consulting, mentoring, and development