Open-source alternatives to Docker

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

Home Assistant is a local home automation platform and server that acts as an IoT device orchestrator. It integrates diverse smart home hardware by wrapping third-party APIs into a standardized logic layer and stores all system state and historical statistics on local hardware to eliminate cloud dependencies. The system functions as a Matter IoT controller and an MQTT home automation bridge, allowing for local interoperability between different manufacturers. It features a state-based entity model and an internal event bus that decouple physical device logic from system automation. The platf

Jenkins is a CI/CD automation server and build automation tool used to orchestrate software build, test, and deployment pipelines. It functions as a pipeline orchestration engine and continuous delivery platform that manages the movement of software from source control to production environments. The project is built as a plugin-based automation framework, utilizing an extensibility model that integrates third-party tools and custom scripts to expand its capabilities. This architecture allows for the integration of specialized automation workflows and custom tool support through a plugin syst

Passbolt is an open-source, self-hosted password manager designed for teams. It provides a centralized, encrypted vault where organizations can store, share, and manage credentials securely. The server exposes a JSON REST API that authenticates requests using either GPGAuth or JWT tokens, and all secrets are protected with OpenPGP end-to-end encryption, ensuring the server never has access to plaintext passwords. The platform distinguishes itself through a comprehensive role-based access control system that governs resource sharing and administrative actions. Teams can organize users into gro

Buildbot is a Python-based continuous integration framework and distributed build orchestrator. It functions as a build automation engine that coordinates the retrieval of source code, the execution of build steps, and the reporting of results through a central controller and a network of remote worker agents. The system is distinguished by a plugin-based extensibility architecture and a master-worker distribution model. It allows for dynamic build modification at runtime and supports a pluggable database backend for persisting system state and historical build data. The project covers a bro

osTicket is an open-source help desk software and ticket management system designed to centralize customer support inquiries from emails, web forms, and API requests. It functions as a multi-channel support tool that converts incoming communications into a structured queue for agent resolution and IT help desk management. The platform features a dedicated customer support portal where users can submit requests, track ticket status, and access a self-service knowledgebase of help articles and FAQs. It integrates secure OAuth2 email authentication to retrieve and send messages without storing l

Maestro is a declarative mobile and web UI automation framework designed for end-to-end testing. It operates by querying the native accessibility tree of an application, allowing for black-box testing without requiring source code instrumentation or platform-specific dependencies. The framework distinguishes itself through a unified command syntax that abstracts interactions across Android, iOS, and web environments. It features a dynamic synchronization engine that automatically pauses test execution to account for non-deterministic animations and network-dependent content loading, ensuring

Strider is a CI/CD server designed to automate the building, testing, and deployment of software through continuous integration and delivery pipelines. It functions as a containerized build system that executes tasks within isolated containers to maintain consistent environments across different host machines. The platform implements a configuration as code model, managing project settings and environment variables through version-controlled files to ensure reproducible workflows. It further integrates with external directory servers via LDAP to manage user identities and administrative acces

Woodpecker is a self-hosted continuous integration server that automates building, testing, and deploying code changes triggered by repository events. It connects to a code forge to trigger pipelines on events and authenticate users, with pipelines defined in YAML files stored in the repository for version-controlled, declarative CI/CD configuration. Each pipeline step runs in an isolated Docker container, ensuring reproducible builds and clean environments with step-level resource isolation. The system uses webhook-driven event triggering from code forge events, and supports a multi-architec

This project is an LLM coding agent orchestrator and AI software engineering platform designed to manage fleets of agents that autonomously solve issues, handle pull requests, and fix CI failures. It functions as an agentic CI/CD automator and parallel workflow manager, coordinating the end-to-end development lifecycle from initial ticket tracking to final code merging. The system is distinguished by its modular plugin framework and isolated worktree management, which allow multiple agents to work on separate coding tasks simultaneously without file system conflicts. It utilizes role-based mo

GoCD is a continuous delivery server and build automation platform designed to orchestrate software delivery pipelines. It functions as a CD pipeline orchestrator that manages the automated execution of build, test, and deployment stages to move code from commit to production. The system utilizes an agent-based job execution model where remote agents pull work from a central server via polling. It employs a state-machine approach to pipeline orchestration, tracking the progression of software through stages and managing immutable build outputs via a central artifact repository to ensure consi

Snyk is an application security testing platform designed to identify and remediate vulnerabilities across source code, open-source dependencies, container images, and infrastructure-as-code configurations. It functions as a comprehensive security workflow automation tool, utilizing a static analysis engine and dependency graph mapping to detect security flaws and license compliance issues throughout the software development lifecycle. The platform distinguishes itself through agentic workflow orchestration and an automated remediation pipeline that generates and submits pull requests to patc

53AIHub is a centralized orchestration platform for deploying and managing AI agents and prompts across multiple large language model providers. It functions as a multi-model AI gateway and an operation portal for AI services, providing a unified interface to coordinate agents and prompts from various external platforms. The project distinguishes itself as a white-label AI portal designed for self-hosted infrastructure, allowing for full control over operational data on private servers or containers. It includes a comprehensive AI SaaS administration layer with a multi-tenant subscription eng

Mattermost Server is an open source collaboration suite and self-hosted team communication platform. It functions as an enterprise chat server and extensible messaging backend that provides a secure environment for professional organizations to exchange messages and coordinate software development. The platform is designed as an AI-integrated communication hub, embedding artificial intelligence into messaging flows to assist users with information retrieval and task completion. It supports a high degree of customization through a plugin-based extension model, allowing for the creation of cust

This project is a self-hosted continuous integration and delivery platform designed specifically for mobile application development. It provides a centralized server environment that monitors source code repositories to trigger automated build, test, and deployment workflows, ensuring that mobile software releases remain consistent and reliable. The platform distinguishes itself through specialized support for the mobile application lifecycle, including the secure management and distribution of cryptographic signing identities. By integrating directly with existing version control platforms f

This project provides a complete OpenVPN server deployment packaged as a Docker container, with an integrated EasyRSA certificate authority for automated public-key infrastructure management. It handles the full lifecycle of a VPN server, from initial PKI bootstrap and server configuration generation to client certificate issuance and revocation, all within a containerized environment. The server is configured entirely through Docker environment variables, eliminating the need for manual configuration file editing. It supports time-based one-time password (TOTP) authentication as a second fac

Komodo is a remote server orchestrator and container deployment platform. It provides a centralized interface for managing multiple remote hosts through lightweight agents, coordinating Docker Swarm and Kubernetes clusters, and automating software delivery via integrated CI/CD pipelines. The system distinguishes itself with a TypeScript-based automation engine that executes typed scripts against the system API for complex operational workflows. It supports infrastructure-as-code through TOML-based declarative configuration synchronization and provides ephemeral build infrastructure that provi

WordPress is an open-source content management system and PHP-based application framework designed for building and maintaining websites. It functions as a visual, block-based website builder that allows users to construct layouts and manage digital content without manual code entry. The platform supports a wide range of operational needs, from managing individual sites to administering complex multi-site networks from a single installation. The system is distinguished by its highly extensible, plugin-driven modular architecture, which allows for the integration of third-party modules to add

EmDash is an open-source content management system built on Astro that combines a visual admin panel with a plugin-driven architecture and server-side rendering. It provides a complete content management system with structured content modeling, a rich text editor using Portable Text format, and a TypeScript API for type-safe content queries. The system supports authentication through passkeys, OAuth 2.1, and external providers, with role-based access control and fine-grained permission scopes. What distinguishes EmDash is its plugin development framework, which supports both native plugins ru

OctoPrint is a web-based platform for remotely controlling and monitoring 3D printers. It provides a browser dashboard to start, pause, cancel, and track print jobs, while streaming real-time printer status, temperature, and progress updates. The system is built around a plugin-based architecture that allows extending core functionality, and it offers a documented REST API for programmatic printer control and data management. The platform distinguishes itself through its comprehensive automation and extensibility capabilities. It supports event-driven workflows that automatically execute cust

This project is a self-hosted cloud storage server and content collaboration platform implemented as a PHP web application framework. It functions as a centralized server for storing, synchronizing, and sharing files and data across multiple devices. The system operates as a WebDAV file server and a synchronization server for scheduling and contact information using CalDAV and CardDAV protocols. It features a plugin architecture that allows the server to be extended with additional applications and custom features. The platform provides capabilities for user and group access management, exte

This project is a Model Context Protocol server and AI agent database connector. It provides a standardized communication layer that allows language models to interact with relational data stores, read database schemas, and manage PostgreSQL database resources. The implementation acts as a serverless host for the Model Context Protocol, deploying on distributed edge functions to connect AI assistants to a project. This enables AI agents to perform database administration, execute SQL queries, and handle schema migrations through an AI-compatible interface. The system covers broader capabilit

Devtron is a Kubernetes management platform and CI/CD orchestrator designed to unify application lifecycles and infrastructure operations across multiple clusters from a single interface. It serves as a centralized dashboard for orchestrating workloads, managing security, and providing observability for Kubernetes environments. The platform distinguishes itself with a no-code workflow engine for automating container builds and software delivery pipelines, alongside a visual GitOps deployment tool for managing declarative applications and reconciling configuration drift. Its capability surfac

This repository is a comprehensive educational resource covering the full spectrum of DevOps practices, including continuous integration and delivery, containerization, orchestration, configuration management, and infrastructure as code. It provides structured content that walks through automating the build, test, and deployment lifecycle using multi-stage pipelines with Jenkins and Azure DevOps. The material covers declarative server configuration and state management through automated Ansible playbooks, enabling consistent system environments across machines. It also addresses container lif

Buildx is a BuildKit build extension and container build instance manager that enables the creation of container images targeting multiple CPU architectures and operating systems simultaneously. It functions as a multi-platform image builder that leverages a BuildKit backend to extend standard image building capabilities. The project features a distributed build orchestrator capable of coordinating tasks across a cluster of remote nodes. This allows for native compilation across different hardware architectures by connecting multiple remote workers into a single instance to increase build con

Rundeck is a job scheduling and automation platform that enables organizations to execute operational tasks across servers, containers, and cloud APIs from a central web console or API. It functions as a multi-node command execution engine, allowing scripts and commands to run across distributed Linux and Windows nodes, and serves as a self-service operations portal that delegates specific tasks to authorized users without granting full system access. The platform also operates as an incident response automation tool, automatically triggering diagnostic and remediation workflows when monitorin

Concourse is a container-based continuous integration and delivery platform that functions as a distributed build system. It operates as a declarative pipeline orchestrator, using a central controller and multiple worker nodes to execute concurrent tasks within isolated containers. The system distinguishes itself by executing every build step in a separate container to ensure environment consistency and by defining software delivery sequences through portable, versionable configuration files. It provides a web-based pipeline visualizer to display the real-time status and progress of automated