Open-source alternatives to Dagger

Libpod is a container management library for running and controlling the lifecycle of Open Container Initiative compliant containers and images across different storage backends. It provides a programmatic interface for the remote control and automation of container environments. The project enables the coordination of multiple containers into pods that share network namespaces and other shared resources. It supports rootless container execution by using user namespaces to launch containers without administrative privileges. The library covers a broad range of system operations, including im

Gaia is a polyglot pipeline orchestrator and continuous integration and delivery automation platform. It functions as a multi-language workflow engine that coordinates the movement and transformation of data by executing tasks written in different programming languages through a dependency graph. The platform distinguishes itself with a visual pipeline configurator for mapping function arguments via a management portal and a secure secret manager that uses ciphers to encrypt passwords and tokens. It further automates the software lifecycle by cloning repositories and recompiling applications

Pipeline is a Kubernetes native CI/CD framework and cloud native pipeline orchestrator. It functions as a custom resource controller that translates declarative pipeline definitions into coordinated pod executions and managed workloads. The system acts as a containerized task runner, allowing for the execution of standalone build steps and reusable tasks that process specific inputs to produce defined outputs. It enables the orchestration of complex workflows by running a sequence of independent containers as modular components within a cloud environment. The platform covers automated softwa

Tilt is a Kubernetes development orchestrator and containerized workflow manager that automates the build, deploy, and update loop for cloud-native services. It functions as an infrastructure-as-code environment, defining the entire local development setup as versioned code to synchronize local source changes with cluster deployments. The project distinguishes itself by offering live container updates, which sync files directly into running containers to bypass full image rebuilds and redeployments. It includes a cloud-native development dashboard for monitoring resource health, streaming agg

This project is a build orchestration engine and development toolkit designed for managing large-scale monorepos. It provides a unified workspace environment that maps project relationships and dependencies, enabling the system to perform intelligent impact analysis and execute only the tasks affected by specific code changes. The system distinguishes itself through a persistent daemon that monitors file changes for near-instant feedback and a content-addressable caching mechanism that stores task outputs to prevent redundant computation across local and remote environments. It further suppor

Buildkit is a programmable container build toolkit and OCI container image builder that converts build definitions into concurrent dependency graphs for image construction. It functions as an OCI image distribution engine, capable of generating container images and exporting artifacts to local storage or remote registries. The project is distinguished by its use of a low-level binary intermediate representation to decouple high-level build languages from the execution engine. It supports multi-platform image builds through user-mode architecture emulation and provides a distributed build cach

This project provides a containerized execution agent designed to host automated workflows for version control platforms. It functions as a self-hosted runner that automatically registers with a central service upon startup and terminates after completing a single job, ensuring that every task runs in a clean, isolated environment. The system distinguishes itself through its focus on ephemeral lifecycle management and security. By utilizing a non-root execution model, it enforces least-privilege principles during job processing. The runner supports dynamic configuration through environment va

ComfyUI is a modular generative AI workflow orchestrator and node-based GUI for designing and executing complex diffusion model pipelines. It functions as both a visual interface for building generative logic graphs and a programmable backend API that exposes diffusion model operations for external integration. The system distinguishes itself through a graph-based execution model that supports differential workflow execution, re-running only modified nodes to reduce computation. It features dynamic model offloading to manage memory between system RAM and GPU VRAM and utilizes metadata-embedde

jx is a GitOps delivery platform and Kubernetes CI/CD orchestrator designed to automate the building and deployment of applications. It functions as a cloud native pipeline manager that executes container-based build and deployment sequences using a catalog of reusable tasks. The project distinguishes itself through the automated orchestration of preview environments, which are created and destroyed based on pull request activity to enable validation before merging. It employs a GitOps-based state synchronization model to maintain the desired state of clusters by polling git repositories and

Ninja is a low-level build system and executable designed to function as a backend for higher-level build generators. It serves as a build graph processor that evaluates build files to determine the optimal execution order for target dependencies and binaries. The tool focuses on fast software compilation by executing commands based on dependency graphs to transform source code into binaries. It operates as an incremental build tool, utilizing file timestamps to manage build operations and recompile only the modified parts of a project. The system manages build automation through automated d

Jenkins-Zero-To-Hero is an educational course and DevOps engineering curriculum designed to teach the practical application of Jenkins for continuous integration and delivery. It serves as a comprehensive guide and tutorial for building automated software release lifecycles. The material specifically focuses on Jenkins Docker integration, providing instructional guides for configuring Docker agents and executing build pipelines within isolated container environments. It covers the development of pipelines as code using declarative scripts to ensure repeatable deployment processes. The curric

Cake is a cross-platform build automation system and scripting framework that allows users to define software build pipelines using C# scripts. It functions as a CI/CD pipeline orchestrator and build runner, providing a strongly-typed domain-specific language to simplify the orchestration of compilation, testing, and packaging processes across Windows, Linux, and macOS. The system ensures reproducible build environments by pinning the versions of build tools, modules, and dependencies. It distinguishes itself by enabling a C# scripting workflow with full IDE support, including autocomplete, s

Sass is a stylesheet compilation engine and CSS preprocessor that extends standard CSS with variables, nested rules, mixins, and functions. It functions as a comprehensive design system tool, enabling developers to organize complex stylesheets into modular, reusable components while automating the transformation of advanced syntax into browser-compatible CSS. The project distinguishes itself through its sophisticated build automation and language-level extensibility. It provides robust support for programmatic style generation, including conditional logic, iterative loops, and unit-aware math

proot-distro is a rootless container runtime and Linux distribution manager that allows users to install and run isolated guest environments without requiring administrative root privileges. It utilizes PRoot to simulate root access and filesystem redirection, enabling the deployment of full Linux distributions in a non-root space. The project functions as an OCI container image handler, capable of building, pulling, and pushing OCI-compatible images and manifests. It further serves as a cross-architecture execution layer, utilizing user-mode emulation to run binaries and containers built for

Buildah is a tool for creating OCI-compliant container images without requiring a background daemon process. It functions as a daemonless image constructor and distribution tool, allowing users to build, push, and pull images between local storage and remote registries. The project distinguishes itself by supporting unprivileged image building through the use of user namespaces and rootless mode. It enables direct modification of container root filesystems by mounting them to the host, allowing images to be treated as directories that can be manipulated via standard shell commands or scripts.

CRI-O is an open-source container runtime that implements the Kubernetes Container Runtime Interface (CRI) to manage container images, pods, and containers on cluster nodes using OCI-compatible runtimes. It serves as a node-level container manager that handles image pulling, container lifecycle, and resource monitoring for Kubernetes clusters, running containers according to the Open Container Initiative specifications. The runtime distinguishes itself through live configuration reloading that applies changes to runtime definitions, registry mirrors, and TLS certificates without restarting th

Moby is an OCI container engine and runtime manager designed for building, running, and managing isolated containers based on Open Container Initiative standards. It functions as a container daemon and image builder, providing a core engine to orchestrate the full lifecycle of containers and the packaging of source code into portable images. The project provides a standardized HTTP interface that allows for programmatic container management, enabling external clients to control daemon settings and container operations. It supports a rootless security model, allowing the engine daemon to execu

Bocker is a minimal container management tool written in Bash that implements core container functionality using Linux namespaces and control groups. It serves as a Linux container manager capable of starting and managing isolated processes and images through low-level kernel features. The project includes an OCI image tool for pulling, saving, and building container images compatible with industry standards. It further integrates a cgroup resource controller to restrict CPU and memory consumption for isolated processes. The tool covers the full container lifecycle, including process isolati

This project is a collection of curated and standardized Docker base images that serve as reliable starting points for building containerized applications. It functions as an OCI container image repository and a build template library, providing a central source of truth for images that adhere to Open Container Initiative standards for portability. The project utilizes an automated image lifecycle pipeline to build, tag, and push images, ensuring that dependencies remain current and security patches are applied. It specifically supports cross-platform distribution by providing a multi-archite

img is a collection of toolsets for building, managing, and manipulating OCI compliant container images. It functions as an image build tool and registry client, providing the capabilities to create images from configuration files, push and pull images to remote registries, and extract image layers into root filesystems or archives. The project distinguishes itself through support for multi-platform builds using hardware emulators and the ability to perform unprivileged container builds via namespace-based process isolation and user ID mapping. It also includes a cross-platform binary compile

This project provides a collection of implementation kits, guides, and source code designed to teach containerized application development and cluster management. It serves as a learning path for packaging applications with Docker and orchestrating workloads within Kubernetes. The repository includes practical walkthroughs for building automated delivery pipelines using containerized runners and build agents. It also provides a suite of guides for implementing cloud-native observability, deploying service meshes, and managing Kubernetes cluster configurations. The material covers a broad ran

Drone is a container-based continuous integration and delivery platform, source control management system, and artifact registry. It functions as a hosted workspace provider for cloud-based developer environments and a system for hosting and versioning code repositories. The platform executes build and deployment pipelines within isolated containers, using declarative configurations to automate software delivery. It includes a centralized registry for managing and versioning compiled binaries and build outputs to ensure consistent deployments across environments. The system covers a broad ca

This project is a collection of reference implementations and templates for CMake build patterns and configuration workflows. It provides standardized templates for managing C++ project structures, compiler flags, and dependency linking. The repository includes a packaging guide for creating installation targets and platform-specific software installers. It also provides a testing suite that demonstrates the integration of unit testing and static analysis tools into the build process. Additional reference configurations cover the execution of builds and tests within isolated, containerized e

Gulp is a JavaScript build automation tool and Node.js task runner designed to coordinate the execution of development tasks. It operates as a streaming build system that transforms source files into production assets through a series of programmable pipelines. The system functions as a file watcher and task orchestrator, monitoring directories for modifications to automatically trigger specific build tasks. It organizes these units of work into sequential or parallel execution paths to streamline development workflows. The toolkit manages asset pipelines by reading files via pattern matchin

python-build-standalone is a toolchain designed to produce redistributable Python executables across multiple operating systems and hardware architectures. It generates standalone Python binaries that can be distributed to users without requiring a pre-installed system interpreter. The project manages the end-to-end process of cross-platform compilation using target triples and containerized environments to ensure consistent binary output. It includes a distribution pipeline that automates the generation of build matrices and the uploading of compiled artifacts to public release pages and mir

This project is a Docker educational resource and a collection of practical examples designed for learning containerization technologies. It serves as a guide for understanding container fundamentals, including the creation and management of custom images and the use of registries. The repository provides specialized references for container security hardening, such as managing kernel privileges and implementing supply chain security. It also includes tutorials for multi-container orchestration and a DevOps guide focused on CI/CD automation and image optimization. The material covers a broad

Argo Workflows is a container-native workflow engine that functions as a Kubernetes custom resource controller. It orchestrates complex sequences of containerized tasks by executing them as directed acyclic graphs, allowing for dependency management and parallel processing within a cluster. The system extends the native Kubernetes control plane to manage the full lifecycle of automated processes, from initial triggering to final resource cleanup. The platform distinguishes itself through its controller-pattern reconciliation, which continuously monitors workflow states to align them with desi