CoreOS vs Docker: What are the differences?
What is CoreOS? Linux for Massive Server Deployments. CoreOS is designed for security, consistency, and reliability. Instead of installing packages via yum or apt, CoreOS uses Linux containers to manage your services at a higher level of abstraction. A single service's code and all dependencies are packaged within a container that can be run on one or many CoreOS machines.
What is Docker? Enterprise Container Platform for High-Velocity Innovation. The Docker Platform is the industry-leading container platform for continuous, high-velocity innovation, enabling organizations to seamlessly build and share any application — from legacy to what comes next — and securely run them anywhere.
CoreOS belongs to "Operating Systems" category of the tech stack, while Docker can be primarily classified under "Virtual Machine Platforms & Containers".
"Container management" is the primary reason why developers consider CoreOS over the competitors, whereas "Rapid integration and build up" was stated as the key factor in picking Docker.
Docker is an open source tool with 54K GitHub stars and 15.6K GitHub forks. Here's a link to Docker's open source repository on GitHub.
According to the StackShare community, Docker has a broader approval, being mentioned in 3527 company stacks & 3449 developers stacks; compared to CoreOS, which is listed in 45 company stacks and 12 developer stacks.
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