Software Alternatives, Accelerators & Startups

Kata Containers VS Docker

Compare Kata Containers VS Docker and see what are their differences

Kata Containers logo Kata Containers

Lightweight virtual machines that seamlessly plug into the containers ecosystem.

Docker logo Docker

Docker is an open platform that enables developers and system administrators to create distributed applications.
  • Kata Containers Landing page
    Landing page //
    2024-07-03
  • Docker Landing page
    Landing page //
    2023-07-25

Docker

Website
docker.com
$ Details
Release Date
2013 January
Startup details
Country
United States
State
California
Founder(s)
Solomon Hykes
Employees
50 - 99

Kata Containers features and specs

  • Security
    Kata Containers offer enhanced security by providing hardware virtualization, which creates a secure boundary around each container. This isolation helps in protecting against attacks and vulnerabilities that might affect other containers.
  • Performance
    Kata Containers are designed to have low overhead compared to traditional virtual machines, allowing them to run with performance akin to native containers while still benefiting from hardware-based isolation.
  • Compatibility
    Kata Containers are compatible with the OCI container runtime specification, making it possible to integrate them with existing cloud-native tools and ecosystems like Kubernetes without significant changes.
  • Flexibility
    They offer a flexible choice for deploying containerized workloads that require the security of virtual machines, allowing organizations to meet both performance and security requirements effectively.

Possible disadvantages of Kata Containers

  • Complexity
    Implementing Kata Containers can introduce additional complexity compared to using regular containers, especially in managing the virtualization layer and ensuring smooth integration with existing container orchestration systems.
  • Resource Overhead
    Although they are lightweight compared to traditional VMs, Kata Containers still incur more overhead than standard containers, requiring more resources in terms of CPU and memory.
  • Maturity
    As a relatively newer technology, Kata Containers may not have the level of maturity and community support that more established container technologies enjoy, potentially leading to challenges in troubleshooting and support.
  • Infrastructure Requirements
    Running Kata Containers effectively may require specific hardware features like VT-x/AMD-V for hardware virtualization, which can limit deployment options on older or less capable hardware.

Docker features and specs

  • Portability
    Docker containers are designed to run consistently across different environments such as development, testing, and production, ensuring that software behaves the same regardless of where it's deployed.
  • Efficiency
    Docker containers share the host OS kernel and use fewer resources compared to traditional virtual machines, which allows for faster startups and reduced overhead.
  • Isolation
    Containers encapsulate the application and its dependencies in a separate environment, which minimizes conflicts between different applications' dependencies.
  • Scalability
    Docker makes it easier to scale applications quickly and manage resource allocation dynamically, which is particularly useful for microservices architectures.
  • Continuous Integration and Deployment
    Docker facilitates CI/CD processes by making it easier to automate the deployment pipeline, resulting in faster code releases and more frequent updates.
  • Community and Ecosystem
    A vast community and a rich ecosystem of tools and pre-built images in Docker Hub, enabling you to quickly find and reuse code and solutions.

Possible disadvantages of Docker

  • Complexity
    While Docker can simplify certain aspects of deployment, it adds a layer of complexity to the infrastructure that might require specialized knowledge and training.
  • Security
    Containers share the host OS kernel, which can pose security risks if an attacker gains access to the kernel. Proper isolation and security measures must be implemented.
  • Persistent Data
    Managing persistent data in Docker can be challenging, as containers are ephemeral and the default storage solutions are not always suitable for all applications.
  • Monitoring and Debugging
    Traditional monitoring and debugging tools might not work well with containerized applications, requiring specialized tools and approaches which can complicate troubleshooting.
  • Performance Overhead
    Although lighter than virtual machines, Docker containers can still introduce performance overheads, especially when multiple containers are running simultaneously.
  • Compatibility
    Not all software and systems are fully compatible with Docker, which can limit its use in certain legacy applications and complex environments.

Kata Containers videos

Kata Containers and gVisor a Quantitative Comparison

More videos:

  • Review - Open Source Contribution - Kata Containers Unit Testing
  • Demo - Kata Containers Demo: A Container Experience with VM Security

Docker videos

What is Docker in 5 minutes

More videos:

  • Tutorial - What is Docker? Why it's popular and how to use it to save money (tutorial)
  • Review - Real World PHP Dockerfile Review, from a #Docker Captain

Category Popularity

0-100% (relative to Kata Containers and Docker)
Developer Tools
5 5%
95% 95
Containers As A Service
DevOps Tools
7 7%
93% 93
Cloud Computing
5 5%
95% 95

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Kata Containers and Docker

Kata Containers Reviews

We have no reviews of Kata Containers yet.
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Docker Reviews

Exploring 7 Efficient Alternatives to MAMP for Local Development Environments
Though not specifically designed for PHP development, Docker offers a containerized approach to create, deploy, and run applications. It enables easy installation of PHP, web servers, and databases within containers, facilitating quick and consistent development environment setups.
Source: medium.com
Top 6 Alternatives to XAMPP for Local Development Environments
Docker - A containerization platform that allows developers to package applications and their dependencies into containers. Docker Compose can be used to define multi-container application stacks, including web servers, databases, and other services. Features powerful portability and consistency, supports rapid building, sharing, and container management, suitable for...
Source: dev.to
The Top 7 Kubernetes Alternatives for Container Orchestration
Docker uses images as templates to create new containers using Docker engine commands such as Build -t or run -d.
Kubernetes Alternatives 2023: Top 8 Container Orchestration Tools
Docker is an open-source platform for building, managing, deploying containerized applications. Swarm is a native feature in Docker with a group of virtual or physical machines that lets you schedule, cluster, and run Docker applications. It is a Docker alternative for Kubernetes that provides high portability, agility, and high availability.
Top 12 Kubernetes Alternatives to Choose From in 2023
Docker Swarm is a native clustering and orchestration solution provided by Docker, the leading containerization platform.
Source: humalect.com

Social recommendations and mentions

Based on our record, Docker seems to be a lot more popular than Kata Containers. While we know about 73 links to Docker, we've tracked only 4 mentions of Kata Containers. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Kata Containers mentions (4)

  • Kubernetes Without Docker: Why Container Runtimes Are Changing the Game in 2025
    Kata Containers Containers in VMs, because sometimes isolation means business. - Source: dev.to / 23 days ago
  • WASM Will Replace Containers
    See https://katacontainers.io Turns out only containers is not secure enough. - Source: Hacker News / 3 months ago
  • Comparing 3 Docker container runtimes - Runc, gVisor and Kata Containers
    Although the documentation also mentions "youki", that is mentioned as a "drop-in replacement" of the default runtime basically doing the same, so let's stick with runc. The second runtime will be Kata runtime from Kata containers, since it runs small virtual machines which is good for showing how differently it uses the CPU and memory. This also adds a higher level of isolation with some downsides as well. And... - Source: dev.to / 7 months ago
  • Hacking Alibaba Cloud's Kubernetes Cluster
    Ronen: Our case study with Alibaba revealed they were using shared Linux namespaces between containers, such as their management container and our container. Sharing Linux namespaces can be dangerous. When designing a system that shares namespaces or resources between management and regular user containers, constantly carefully assess and be aware of the risks involved. Container technologies like GVisor and Kata... - Source: dev.to / 11 months ago

Docker mentions (73)

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What are some alternatives?

When comparing Kata Containers and Docker, you can also consider the following products

OrbStack - Fast, light, simple Docker & Linux on macOS

Kubernetes - Kubernetes is an open source orchestration system for Docker containers

FreeBSD Jails - Jails on the other hand permit software packages to view the system egoistically, as if each package had the machine to itself.

Rancher - Open Source Platform for Running a Private Container Service

containerd - An industry-standard container runtime with an emphasis on simplicity, robustness and portability

Apache Karaf - Apache Karaf is a lightweight, modern and polymorphic container powered by OSGi.