Software Alternatives, Accelerators & Startups

Buildah VS Apache Karaf

Compare Buildah VS Apache Karaf and see what are their differences

Buildah logo Buildah

Buildah is a web-based OCI container tool that allows you to manage the wide range of images in your OCI container and helps you to build the image container from the scratch.

Apache Karaf logo Apache Karaf

Apache Karaf is a lightweight, modern and polymorphic container powered by OSGi.
  • Buildah Landing page
    Landing page //
    2022-05-27
  • Apache Karaf Landing page
    Landing page //
    2021-07-29

Buildah features and specs

  • Lightweight
    Buildah is a tool focused solely on building OCI and Docker-compatible containers, which makes it less resource-intensive compared to other container building solutions that include additional components like container runtimes.
  • Daemon-less
    Unlike Docker, Buildah does not require a running daemon, meaning it can be used in environments where a daemon is not desired or feasible, enhancing security and reducing footprint.
  • Flexibility
    Buildah provides flexibility by allowing precise control over container image creation, enabling advanced scenarios like building images from scratch, adding content at various stages, and using alternative base images.
  • Security
    Running without a daemon improves security by minimizing attack surfaces and permissions needed for building images, allowing for container creation and management by unprivileged users.
  • Integration with Podman
    Buildah integrates well with Podman, allowing users to manage containers and images without requiring additional integrations, as both are part of the same toolset for comprehensive container management.

Possible disadvantages of Buildah

  • Steep Learning Curve
    Users already familiar with Docker might find Buildah’s command-line interface and functionality to be different, necessitating a learning curve to effectively utilize its capabilities.
  • Less Mature Ecosystem
    Compared to Docker, Buildah has a smaller community and fewer integrations with third-party tools or cloud platforms, potentially limiting its use in complex or niche scenarios.
  • Lack of Windows Support
    As of now, Buildah primarily supports Linux platforms, which can be a limitation for developers using or targeting Windows environments.
  • Limited GUI Tools
    Buildah primarily operates through a command-line interface, with fewer graphical user interface options available, which might not appeal to users who prefer visual management tools.
  • Documentation Gaps
    Although improving, Buildah’s documentation can be less comprehensive and more challenging to navigate than Docker's, potentially making troubleshooting or advanced usage more difficult.

Apache Karaf features and specs

  • Modular architecture
    Apache Karaf features a highly modular architecture that allows users to deploy, control, and monitor applications in a flexible and efficient manner. This makes it easy to manage dependencies and extend functionalities as needed.
  • OSGi support
    Karaf fully supports OSGi (Open Services Gateway initiative), which is a framework for developing and deploying modular software programs and libraries. This enables dynamic updates and replacement of modules without requiring a system restart.
  • Extensible and flexible
    Karaf's extensible architecture allows developers to integrate various technologies and custom modules, fostering a flexible environment that can suit a wide range of application types and requirements.
  • Enterprise features
    It provides a range of enterprise-ready features such as hot deployment, dynamic configuration, clustering, and high availability, which can help in building robust and scalable applications.
  • Comprehensive tooling
    Karaf comes with comprehensive tooling support including a powerful CLI, web console, and various tools for monitoring and managing the runtime environment. These tools simplify everyday management tasks.

Possible disadvantages of Apache Karaf

  • Steeper learning curve
    Due to its modular and extensible nature, Apache Karaf can have a steeper learning curve for new users, especially those unfamiliar with OSGi concepts and enterprise middleware.
  • Resource intensity
    Running and managing an Apache Karaf instance can be resource-intensive, especially when dealing with large-scale or highly modular applications. Adequate memory and processing power are required to maintain optimal performance.
  • Complex deployment
    While Karaf can handle complex deployment scenarios, setting it up and configuring it properly can be more involved compared to other simpler solutions. This complexity can increase the initial setup time and effort.
  • Limited community support
    Despite being an Apache project, the community around Apache Karaf might not be as large or active as other popular frameworks, potentially making it harder to find ample resources or immediate support.
  • Dependency management challenges
    Managing dependencies in Karaf, especially when dealing with multiple third-party libraries and their versions, can become cumbersome and lead to conflicts if not handled carefully.

Buildah videos

How to Build a Container Image Using Buildah

Apache Karaf videos

EIK - How to use Apache Karaf inside of Eclipse

More videos:

  • Review - OpenDaylight's Apache Karaf Report- Jamie Goodyear

Category Popularity

0-100% (relative to Buildah and Apache Karaf)
Cloud Computing
35 35%
65% 65
OS & Utilities
100 100%
0% 0
Cloud Hosting
26 26%
74% 74
Developer Tools
30 30%
70% 70

User comments

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Social recommendations and mentions

Based on our record, Buildah seems to be a lot more popular than Apache Karaf. While we know about 13 links to Buildah, we've tracked only 1 mention of Apache Karaf. 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.

Buildah mentions (13)

  • Dockerfmt: A Dockerfile Formatter
    I suspect that the GP was really asking "why not use a different tool", like buildah , buildpacks , nix ,. - Source: Hacker News / 26 days ago
  • Top 8 Docker Alternatives to Consider in 2025
    Buildah specializes in building OCI-compliant container images, offering a more granular and secure approach to image creation compared to traditional Dockerfile builds. - Source: dev.to / 4 months ago
  • How to Create a CI/CD Pipeline with Docker
    Lockdown your Dockerized build environments --- Because privileged mode is insecure, you should restrict your CI/CD environments to known users and projects. If this isn't feasible, then instead of using Docker, you could try using a standalone image builder like Buildah to eliminate the risk. Alternatively, configuring rootless Docker-in-Docker can mitigate some --- but not all --- of the security concerns... - Source: dev.to / 12 months ago
  • Ko: Easy Go Containers
    In my experience, not using docker to build docker images is a good idea. E.g. buildah[0] with chroot isolation can build images in a GitLab pipeline, where docker would fail. It can still use the same Dockerfile though. If you want to get rid of your Dockerfiles anyway, nix can also build docker images[1] with all the added benefits of nix (reproducibility, efficient building and caching, automatic layering,... - Source: Hacker News / over 1 year ago
  • Understanding Docker Architecture: A Beginner's Guide to How Docker Works
    Buildah: This lightweight, open-source command-line tool for building and managing container images. It is an efficient alternative to Docker. With Buildah, you can build images in various ways, including using a Dockerfile, a podmanfile or by running commands in a container. Buildah is a flexible, secure and powerful tool for building container images. - Source: dev.to / almost 2 years ago
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Apache Karaf mentions (1)

  • Need advice: Java Software Architecture for SaaS startup doing CRUD and REST APIs?
    Apache Karaf with OSGi works pretty nice using annotation based dependency injection with the declarative services, removing the need to mess with those hopefully archaic XML blueprints. Too bad it's not as trendy as spring and the developers so many of the tutorials can be a bit dated and hard to find. Karaf also supports many other frameworks and programming models as well and there's even Red Hat supported... Source: about 4 years ago

What are some alternatives?

When comparing Buildah and Apache Karaf, you can also consider the following products

Podman - Simple debugging tool for pods and images

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

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

Google App Engine - A powerful platform to build web and mobile apps that scale automatically.

CRI-O - Lightweight Container Runtime for Kubernetes

Amazon S3 - Amazon S3 is an object storage where users can store data from their business on a safe, cloud-based platform. Amazon S3 operates in 54 availability zones within 18 graphic regions and 1 local region.