Docker
Docker takes away repetitive, mundane configuration tasks and is used throughout the development lifecycle for fast, easy and portable application development, desktop and cloud. Docker’s comprehensive end-to-end platform includes UIs, CLIs, APIs and security that are engineered to work together across the entire application delivery lifecycle. Get a head start on your coding by leveraging Docker images to efficiently develop your own unique applications on Windows and Mac. Create your multi-container application using Docker Compose. Integrate with your favorite tools throughout your development pipeline, Docker works with all development tools you use including VS Code, CircleCI and GitHub. Package applications as portable container images to run in any environment consistently from on-premises Kubernetes to AWS ECS, Azure ACI, Google GKE and more. Leverage Docker Trusted Content, including Docker Official Images and images from Docker Verified Publishers.
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balenaEngine
An engine purpose-built for embedded and IoT use cases, based on Moby Project technology from Docker. 3.5x smaller than Docker CE, packaged as a single binary. Available for a wide variety of chipset architectures, supporting everything from tiny IoT devices to large industrial gateways. Bandwidth-efficient updates with binary diffs, 10-70x smaller than pulling layers in common scenarios. Extract layers as they arrive to prevent excessive writing to disk, protecting your storage from eventual corruption. Atomic and durable image pulls defend against partial container pulls in the event of power failure. Prevents page cache thrashing during image pull, so your application runs undisturbed in low-memory situations. balenaEngine is a new container engine purpose-built for embedded and IoT use cases and compatible with Docker containers. Based on Moby Project technology from Docker, balenaEngine supports container deltas for 10-70x more efficient bandwidth usage.
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Mirantis Container Runtime
Mirantis Container Runtime (MCR), formerly Docker Engine Enterprise, is a secure, enterprise-grade container runtime that enables teams to build and run containers natively on Linux and Windows while using familiar Docker CLI, Dockerfiles, and APIs to power business-critical applications with industry-leading container engine technology and certified support for Kubernetes and Swarm. MCR is fully compatible with Docker-based workflows and toolchains, providing a seamless path from development to production and tested, validated releases across a broad set of operating systems with robust CVE patching and bug fixes to ensure workload stability. It delivers world-class security with FIPS 140-2 validated cryptographic modules, mandatory access controls such as AppArmor and SELinux, image signature verification, and support for sandboxed runtimes like Kata and gVisor to enforce trusted, compliant containers.
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rkt
rkt is an application container engine developed for modern production cloud-native environments. It features a pod-native approach, a pluggable execution environment, and a well-defined surface area that makes it ideal for integration with other systems. The core execution unit of rkt is the pod, a collection of one or more applications executing in a shared context (rkt's pods are synonymous with the concept in the Kubernetes orchestration system). rkt allows users to apply different configurations (like isolation parameters) at both pod-level and at the more granular per-application level. rkt's architecture means that each pod executes directly in the classic Unix process model (i.e. there is no central daemon), in a self-contained, isolated environment. rkt implements a modern, open, standard container format, the App Container (appc) spec, but can also execute other container images, like those created with Docker.
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