In early 2010 I wrote a post titled Atlanta’s Online Marketing Software Cluster to bring awareness to the numerous startups in town. Well, I wanted to revisit the companies listed in that original post and add employee counts based on LinkedIn as of late October 2011. Here we go:
- Silverpop – Email marketing (416 employees)
- What Counts– Email marketing (70 employees)
- MailChimp – Email marketing (100 employees)
- Hannon Hill – Web content management (29 employees)
- Pardot – Marketing automation (53 employees)
- LoopFuse – Marketing automation (7 employees)
- LeadLife – Marketing automation (6 employees)
- CoreMotives – Marketing automation (7 employees)
- SalesFusion – Marketing automation (7 employees)
- ThePort – Private social networking (16 employees)
- Mobilization Labs – Private social networking (7 employees)
- Nimbus – Non-profit online marketing (10 employees)
- IgnitionOne – Search engine bid management software (89 employees)
- Vitrue – Facebook marketing (178 employees)
- BrightWhistle – Healthcare digital marketing platform (13 employees)
Total number of employees: 1,008.
Now, these are total employees listed online, and not all are in Atlanta. All of these companies are headquartered in Atlanta with the majority of their employees here. With 1,008 employees in these 15 companies, marketing software is one of the largest technology clusters in Atlanta.

At the 


