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Docker VS QEMU

Compare Docker VS QEMU and see what are their differences

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Contents:
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  3. » Reviews
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Docker logo Docker

Docker is an open platform that enables developers and system administrators to create distributed applications.

QEMU logo QEMU

QEMU (short for "Quick EMUlator") is a free and open-source hosted hypervisor that...
  • Docker Landing page
    Landing page //
    2023-07-25
  • QEMU Landing page
    Landing page //
    2022-01-14

Docker

Website
docker.com
Pricing URL
Official Docker Pricing
$ Details
Release Date
2013 January
Startup details
Country
United States
State
California
City
San Francisco
Founder(s)
Solomon Hykes
Employees
50 - 99
Edit details

QEMU

Website
qemu.org
Pricing URL
-
$ Details
Release Date
-
Edit details

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.

QEMU features and specs

  • Open Source
    QEMU is completely open-source, meaning it is free to use and its source code is available for modification and improvement by the community.
  • Platform Support
    QEMU supports a wide range of architectures and platforms, allowing users to emulate systems from x86 to ARM and beyond.
  • Performance
    When used with KVM (Kernel-based Virtual Machine), QEMU offers near-native performance for virtual machines on x86 hardware.
  • Flexibility
    QEMU can be used for a variety of tasks, such as running virtual machines, debugging, or even virtualization for embedded systems.
  • Integration
    QEMU integrates well with other systems and tools, making it a versatile component in large, complex setups (e.g., OpenStack).

Possible disadvantages of QEMU

  • Complexity
    The vast array of features and configuration options can make QEMU overwhelming and difficult to set up for beginners.
  • Performance Overhead
    Without the use of KVM or other hardware acceleration, QEMU's performance can be significantly slower compared to other hypervisors.
  • Limited GUI
    QEMU primarily operates via command-line interface, which might not be user-friendly for individuals who prefer graphical user interfaces.
  • Sparse Documentation
    While improving, some parts of QEMU's documentation remain sparse or difficult to understand, which can pose challenges during advanced configurations or troubleshooting.
  • Resource Intensive
    Running multiple instances of QEMU can be resource-intensive on the host system, which may affect overall performance.

Docker videos

+ Add

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

QEMU videos

+ Add

What is QEMU?

More videos:

  • Review - Creating Virtual Machines in QEMU | Virt-manager | KVM
  • Review - Community Code Review & QEMU

Category Popularity

0-100% (relative to Docker and QEMU)

Docker

QEMU

Developer Tools
100 100%
Developer Tools
0% 0
Cloud Computing
53 53%
Cloud Computing
47% 47
Containers As A Service
100 100%
Containers As A Service
0% 0
Virtualization
0 0%
Virtualization
100% 100

User comments

Share your experience with using Docker and QEMU. For example, how are they different and which one is better?
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Reviews

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

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.
Source: cloudnativenow.com
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.
Source: www.servertribe.com
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

QEMU Reviews

15 Lutris Alternatives
QEMU is a piece of open-source software for simulating hardware. It lets users of one operating system (OS) use apps made for another. The virtualization software could then be put on these host operating systems. It enables computers with one OS to use software made for a different OS. With the help of dynamic translation, users can do well in what they do. This software is...
Source: www.justalternativeto.com
Best Alternatives of VirtualBox for Windows
Short for Quick Emulator, QEMU is another free and open source virtualization solution for a variety of operating systems. While it is immensely powerful, it is also one of the least user friendly out there. QEMU offers a host of advanced capabilities and features that others of the same genre fall short of, including a wide variety of architectures in place of the...
Source: www.bollyinside.com
10 Best VMware Alternatives and Similar Software
QEMU also allows users to run applications from other computers from within their operating system. QEMU’s great performance is ensured via a dynamic translation.
Source: www.regendus.com
12 Best FREE Virtual Machine (VM) Software in 2020
QEMU is another popular emulator and virtualization machine, which is a short form of Quick Emulator. This system is written in C language.
Source: www.guru99.com
7 VirtualBox Alternatives You Can Consider
QEMU stands for “quick emulator” which is a highly capable open source and free virtualization software. It has support for Windows, Linux, and macOS as a guest and can also run on all three host platforms. Installing it is comparatively easier but gets a bit complicated while using it. While it doesn’t need a high configuration PC to run. To run your guest OS on the virtual...
Source: www.techuntold.com

Social recommendations and mentions

Based on our record, Docker seems to be a lot more popular than QEMU. While we know about 73 links to Docker, we've tracked only 3 mentions of QEMU. 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.

Docker mentions (73)

View more

QEMU mentions (3)

  • Podman and production use
    Qemu.org, wiki.qemu.org, patchew.org, kvm-forum.qemu.org are all Podman containers on the same machine (running CentOS Stream 9) with an nginx front-end. Nginx and certbot are the only two things that run outside containers. Source: almost 2 years ago
  • From WampServer, to Vagrant, to QEMU
    As someone who enjoys playing video games, and a recent convert to Linux, I was well aware of the derth of support for games. I was also aware of some of the solutions, one of those being GPU passthrough to this thing called QEMU. QEMU is a fast and lightweight machine emulator and virtualizer. This was of course something that interested me, so I went about exploring QEMU and playing with it. When I first started... - Source: dev.to / over 2 years ago
  • Premium fonts on Linux
    Install the windows-version using https://WineHQ.org or put in an a VM, like https://qemu.org/. Source: almost 3 years ago

What are some alternatives?

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

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

VirtualBox - VirtualBox is a powerful x86 and AMD64/Intel64 virtualization product for enterprise as well as...

Rancher - Open Source Platform for Running a Private Container Service

VMware Workstation - VMware Workstation is a multiple operating system handler to easily evaluate the any other type of new operating systems.

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

Proxmox VE - Proxmox is an open-source server virtualization management solution that offers the ability to manage virtual server technology with the Linux OpenVZ and KVM technology.

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