As was mentioned by Duncan Epping - the beta for Virtual Center on Linux is out.

• Comes an OVF package so it can be imported easily into all Vmware products.
  
• It is based on Centos using Just Enough Operating System (JEOS)
• You will need a an Oracle 10 Database
• Does Not support
  
  
  • Monitoring
  • Alarms
  • No LDAP
  • No VM Customizations
  • No VI Web Access
  • No Plug-ins
  • No Local DB
  • Scheduled Tasks
  • Maps
  • Update Manager
  • SRM
  • Converter Enterprise
  • Guided Consolidation
    

More info here