The container revolution is upon us.

Companies from Red Hat to IBM, Amazon Web Services to Microsoft and even VMware are all into containers. And where there is a hot new technology, there are of course hot startups.

In the past year interest and buzz about containers has soared. A recent survey from research firm Forrester found that 31% of developers said they’ve used Docker or containers in the past year. “That’s a big number of global developers for such a new technology,” says Dave Bartoletti, who tracks containers for Forrester. Another 9% say containers are already in production — a respectable number for such a young market.

Fundamentally containers are a way to virtualize the operating system to managing code and applications. There are challenges around managing containers though, from coordinating the network, to assigning storage for them. Startups from across the industry are tackling these issues and more, and here’s a closer look at 12 of them.

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