InfoWorld published a brief review of Akimbi Slingshot 2.2, scoring it 7.9/10 and providing this bottom line:
Akimbi Slingshot makes it easy to set up, deploy, copy, and tear down complex multi-server configurations of virtual machines. Its capability to capture snapshots of configurations and play them simultaneously is impressive.
Rough edges, incomplete documentation, and the lack of a reporting module hamper the product, however.
Read it at source.