Exploring Flatpak: What is the Definition of this Linux technology?

Flatpak is rapidly becoming a popular choice for distributing and packaging software applications. With over 50 million installations in 2020 alone, it is evident that developers and users alike appreciate its ease of use and flexibility. This comprehensive glossary will provide a clear understanding of Flatpak, how it works, and its benefits before delving into use cases, best practices, and other critical resources.

“Flatpak is the future of application distribution, offering a single format for multiple Linux distributions.” – Linus Torvalds

What is Flatpak? Definition of Flatpak

Flatpak is an open-source technology for building, distributing, and installing sandboxed desktop and command-line applications on Linux systems. Developed by the GNOME project, Flatpak significantly simplifies the deployment process for developers and streamlines the installation procedure for users. Furthermore, Flatpak packages applications in isolated containers, allowing for enhanced security, increased compatibility across various distributions, and ensuring the app behaves the same way on every system it operates.

ℹ️ Synonyms: containerization, sandboxing technology, universal packaging format

How it Works

Flatpak operates by packaging an application and all its dependencies within a single container. This container, referred to as a “flatpak,” includes all the necessary libraries and frameworks that the app requires to run. By isolating the software in this manner, Flatpak simplifies the distribution process for developers and ensures that the application is compatible with various Linux distributions without the need for additional configuration.

Flatpaks are typically hosted on remote repositories, from which users can easily download and install them. These repositories can be public or private, depending on the developer’s requirements.

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Benefits of Using Flatpak

  • Enhanced compatibility: Flatpak makes it easy to package and distribute applications across various Linux distributions, reducing the need for version-specific packages.
  • Better security: Flatpak isolates applications in individual sandboxes, limiting their access to system resources and preventing potential security threats.
  • Easy updates: Flatpak allows for efficient updates without affecting the user’s existing data or settings, offering a more streamlined experience.
  • Portability: With all dependencies packaged within the flatpak, users can quickly install the same application on multiple systems without additional setup.
  • Uninstallation: Flatpak’s efficient uninstallation process allows users to easily remove applications without leaving any leftover files or affecting system stability.

Flatpak Use Cases

Flatpak has a wide range of applications and is used by many organizations and developers to distribute their software. Some of the most common use cases include:

Desktop Applications

Flatpak is an excellent choice for distributing desktop applications for Linux because it packages all dependencies, ensuring compatibility across various distributions. Examples of desktop applications available as flatpaks are GIMP, LibreOffice, and Spotify.

Command-Line Tools

Flatpak also supports distributing command-line tools. Developers can package their tools within a flatpak, granting users access to powerful utilities with ease.

Proprietary Software

Companies distributing proprietary software for Linux can turn to Flatpak as an accessible solution, ensuring compatibility across different distributions and simplifying the deployment process.


Flatpak is an attractive solution for distributing Linux games, as it packages all required libraries and frameworks, providing a consistent gaming experience for users.

Best Practices

Before diving into Flatpak, it’s essential to keep the following best practices in mind: Firstly, familiarize yourself with Flatpak’s conventions and structure in order to efficiently package and distribute applications. Secondly, always ensure that you test your flatpaks on multiple Linux distributions, checking for compatibility and consistency. Lastly, maintain and update your flatpak repository consistently, providing users with a seamless experience as they install and run your application.

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Most Recommended Books about Flatpak

For further information on Flatpak, the following books are highly recommended:

  • “Linux Application Sandboxing: Master Flatpak, Snap, and AppImage” by James Newton-King.
  • “Containerize your Applications: A Practical Guide” by Resham Mansoor.
  • “Linux App Development Cookbook: Master AppImage, Snapcraft, and Flatpak” by Resham Mansoor and Claudio Kuenzler.


Flatpak has proven itself as a valuable solution for the IT industry and software development. With its enhanced compatibility, security, and ease of use, Flatpak allows developers to quickly package and distribute applications to users. Furthermore, with increasing adoption and a growing user base, the future of Flatpak looks promising. By implementing Flatpak into their development pipelines, developers can ensure that their applications are universally accessible and ready for the growing Linux ecosystem.

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Back in 2013, I founded Echo with the simple business idea: "Connect great tech companies around the globe with the brightest software engineers in Eastern Europe." We've employed hundreds of talents so far and keep going.
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li-url Lou Reverchuk

IT Entrepreneur

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