2025年のDevOpsに最適なCI/CDパイプラインツール20+選

In the fast-evolving world of software development, Continuous Integration and Continuous Deployment (CI/CD) are pivotal for achieving agility, reliability, and speed in delivering high-quality applications. CI/CD pipelines automate code integration, testing, and deployment, enabling DevOps teams to streamline the software development lifecycle (SDLC). As we move into 2025, the CI/CD ecosystem is richer than ever, offering tools that cater to diverse needs—from cloud-native microservices to enterprise-scale deployments. This blog explores the 20+ best CI/CD pipeline tools for DevOps in 2025, detailing their features, strengths, and ideal use cases to empower teams to choose the right tool for their workflows.

Understanding CI/CD Pipeline Tools

CI/CD pipeline tools automate the processes of Continuous Integration (CI), where code changes are frequently merged, built, and tested, and Continuous Deployment/Delivery (CD), where code is automatically deployed to production or staging environments. These tools integrate with version control systems, support automated testing, and enable seamless deployments across cloud, on-premises, or hybrid environments. Key benefits include reduced manual errors, faster release cycles, and improved collaboration. In 2025, CI/CD tools are shaped by trends like AI-driven automation, GitOps workflows, DevSecOps integration, and Kubernetes-native solutions, making them indispensable for modern DevOps practices.

The Top 20+ CI/CD Pipeline Tools for 2025

Below is a comprehensive list of the top CI/CD tools, evaluated for their capabilities, scalability, and relevance in 2025’s DevOps landscape.

1. Jenkins

概要 Jenkins, a free and open-source automation server, remains a cornerstone of CI/CD, renowned for its flexibility and extensive plugin ecosystem.

主な特徴

• Over 1,900 plugins for integration with Git, Docker, Kubernetes, and cloud platforms.
• Pipeline-as-Code using Jenkinsfile for version-controlled workflows.
• Distributed builds for scalability across multiple nodes.
• Cross-platform support (Windows, macOS, Linux).

長所だ：

• Highly customizable for complex pipelines.
• Strong community support with vast documentation.
• Free with no licensing costs.

短所だ：

• Requires significant setup and maintenance.
• Steep learning curve for beginners.

最適： Teams needing a versatile, self-hosted CI/CD solution for custom workflows.

2. GitLab CI/CD

概要 GitLab CI/CD, embedded within the GitLab platform, offers an all-in-one DevOps solution with seamless integration for code, CI/CD, and monitoring.

主な特徴

• YAML-based .gitlab-ci.yml for pipeline configuration.
• Auto DevOps for automated pipeline creation.
• Built-in container registry and Kubernetes support.
• Security scanning and compliance tools.

長所だ：

• Unified platform with version control and CI/CD.
• Free tier with robust features.
  Scalable for small to enterprise teams.

短所だ：

• Resource-heavy for large projects.
• Advanced features require paid plans.

最適： Teams using GitLab for version control and seeking an integrated DevOps experience.

3. CircleCI

概要 CircleCI is a cloud-based CI/CD tool known for its speed, scalability, and developer-friendly interface, with both cloud and self-hosted options.

主な特徴

• Docker and Kubernetes support for containerized builds.
• Parallel job execution for faster testing.
• Integration with GitHub, Bitbucket, and Slack.
• Orbs for reusable pipeline configurations.

長所だ：

• Quick setup with YAML-based workflows.
• Free plan for open-source projects.
• High performance for parallel testing.

短所だ：

• Limited free plan features.
• Pricing scales with usage, impacting large teams.

最適： Developer-centric teams building cloud-native or open-source applications.

4. Azure DevOps

概要 Azure DevOps, Microsoft’s comprehensive DevOps suite, includes Azure Pipelines for CI/CD, alongside tools for version control and project management.

主な特徴

• Multi-language support (Python, Java, Node.js).
• Native integrations with Azure, GitHub, and Kubernetes.
• Automated testing and deployment stages.
• On-premises and cloud-hosted options.

長所だ：

• Deep integration with Microsoft ecosystem.
• Free for up to 10 open-source projects.
• Robust security for enterprise use.

短所だ：

• Complex for non-Microsoft environments.
• Overwhelming for small teams.

最適： Enterprises leveraging Azure or Microsoft tools for large-scale deployments.

5. GitHub Actions

概要 GitHub Actions, integrated into GitHub, automates CI/CD workflows directly from repositories using event-driven triggers.

主な特徴

• YAML-based workflow definitions.
• Matrix testing for multiple OS and versions.
• Community marketplace for reusable actions.
• Seamless GitHub repository integration.

長所だ：

• Free for public repositories.
• Intuitive for GitHub users.
• Scalable for diverse projects.

短所だ：

• Limited outside GitHub ecosystem.
• Costly for private repositories with heavy usage.

最適： Teams using GitHub for version control and automation.

6. TeamCity

概要 JetBrains’ TeamCity is a powerful CI/CD server offering advanced build management and real-time monitoring for professional teams.

主な特徴

• Customizable build configurations and workflows.
• Docker support for containerized environments.
• Parallel test execution and real-time reporting.
• Integration with IntelliJ IDEA and Git.

長所だ：

• Free Professional Server with 3 build agents.
• User-friendly dashboards.
  Strong multi-language support.

短所だ：

• Paid Enterprise edition ($2,399/month) for advanced features.
• Steeper learning curve than cloud-based tools.

最適： Professional teams managing complex, multi-language projects.

7. Bamboo

概要 Atlassian’s Bamboo integrates with Jira and Bitbucket, providing a robust CI/CD server for automated builds and deployments.

主な特徴

• Per-environment permissions for secure deployments.
• Automatic branch detection for Git/SVN.
• Customizable stages and parallel jobs.
• AWS and Kubernetes integrations.

長所だ：

• Seamless Atlassian ecosystem integration.
• Flexible pricing based on build agents.
• Clear build history visibility.

短所だ：

• Expensive for large teams.
• Less customizable than Jenkins.

最適： Teams using Atlassian tools for end-to-end traceability.

8. Spinnaker

概要 Spinnaker, an open-source CD platform by the Linux Foundation, excels in multi-cloud deployments with advanced strategies like canary releases.

主な特徴

• Supports AWS, Azure, GCP, and Kubernetes.
• Image bakery for immutable VMs.
• Canary analysis for performance validation.
• API for custom integrations.

長所だ：

• Free and open-source.
• Ideal for multi-cloud environments.
• Advanced deployment strategies.

短所だ：

• Complex setup and maintenance.
• Steep learning curve for beginners.

最適： Teams deploying cloud-native apps across multiple clouds.

9. Harness

概要 Harness is an AI-native CI/CD platform that uses machine learning to optimize pipelines and enhance deployment reliability.

主な特徴

• AI-driven anomaly detection and rollback.
• Git-based pipeline-as-code.
• Integrations with AWS, GitHub, and ServiceNow.
• Automated canary and blue/green deployments.

長所だ：

• Intuitive for non-technical users.
• Flexible pricing for startups.
• Strong DevSecOps capabilities.

短所だ：

• Premium pricing for advanced features.
• Smaller open-source community.

最適： Teams prioritizing AI-driven automation and security.

10. Argo CD

概要 Argo CD is a Kubernetes-native, GitOps-based CD tool focused on declarative configuration and automated drift detection.

主な特徴

• GitOps workflows for Kubernetes manifests.
• Automated sync and drift remediation.
• Multi-cluster deployment support.
• Web UI for pipeline monitoring.

長所だ：

• Free and open-source.
• Lightweight and Kubernetes-native.
• Strong GitOps adoption.

短所だ：

• Limited to Kubernetes environments.
• Requires GitOps expertise.

最適： Cloud-native teams using Kubernetes for deployments.

11. Codefresh

概要 Codefresh is a GitOps-powered CI/CD platform optimized for cloud-native applications, with a focus on Kubernetes and containers.

主な特徴

• Built-in caching for faster builds.
• Parallelized pipelines for scalability.
• Argo-based GitOps integration.
• Observability dashboards for monitoring.

長所だ：

• Optimized for Kubernetes and Docker.
• Free tier for small teams.
• Intuitive pipeline management UI.

短所だ：

• Limited for non-containerized apps.
• Premium plans can be costly.

最適： Teams building containerized, cloud-native applications.

12. Travis CI

概要 Travis CI is a cloud-based CI/CD tool popular for open-source projects, offering simple setup and GitHub integration.

主な特徴

• YAML-based pipeline configuration.
• Multi-OS testing (Linux, macOS, Windows).
• Automatic backups for failed builds.
• GitHub and Bitbucket integrations.

長所だ：

• Free for open-source projects.
• Easy setup for GitHub workflows.
• Scalable for small teams.

短所だ：

• Limited free plan features.
• Less suited for complex enterprise needs.

最適： Open-source developers and small teams.

13. GoCD

概要 GoCD, an open-source tool by ThoughtWorks, specializes in continuous delivery with its unique Value Stream Map (VSM) feature.

主な特徴

• VSM for pipeline visualization.
• YAML and JSON pipeline-as-code.
• Dependency management for chained pipelines.
• Kubernetes and Docker support.

長所だ：

• Free and open-source.
  Strong visualization tools.
• Ideal for complex CD workflows.

短所だ：

• Smaller plugin ecosystem than Jenkins.
• Complex UI for beginners.

最適： Teams needing robust CD pipelines with clear visibility.

14. Bitbucket Pipelines

概要 Bitbucket Pipelines, part of Atlassian’s Bitbucket Cloud, transforms repositories into CI/CD platforms with configuration-as-code.

主な特徴

• YAML-based pipeline configuration.
• Built-in Docker support.
• Jira integration for issue tracking.
• DORA metrics for DevOps performance.

長所だ：

• Seamless Bitbucket integration.
• Free tier with 50 build minutes/month.
• Easy setup for small teams.

短所だ：

• Limited scalability for large projects.
• Tied to Bitbucket ecosystem.

最適： Teams using Bitbucket for version control.

15. AWS CodePipeline

概要 AWS CodePipeline is a managed CD service that automates release pipelines for applications and infrastructure updates.

主な特徴

• Customizable workflows with prebuilt plugins.
• Integration with AWS CodeBuild and CodeDeploy.
• Automated testing and deployment stages.
• Multi-region support.

長所だ：

• Deep AWS ecosystem integration.
• Scalable for enterprise needs.
• Reliable for cloud deployments.

短所だ：

• Limited outside AWS environments.
• Complex for non-AWS users.

最適： Teams building on AWS infrastructure.

16. Semaphore

概要 Semaphore is a fast, cloud-based CI/CD tool offering native Docker support and flexible pipeline configurations.

主な特徴

• Docker-based pipeline execution.
• Auto-scaling for parallel builds.
• GitHub integration for testing.
• Pay-as-you-go pricing model.

長所だ：

• Fast build times with caching.
• 14-day free trial for startups.
• User-friendly interface.

短所だ：

• Expensive for large teams.
• Limited advanced features.

最適： Startups and small teams deploying Docker-based apps.

17. Buildkite

概要 Buildkite is a hybrid CI/CD tool that runs pipelines on your infrastructure, offering speed and security for scalable builds.

主な特徴

• Self-hosted agents for custom environments.
• Dynamic pipeline definition.
• Integration with GitHub and Slack.
• Free for open-source projects.

長所だ：

• High security with on-premises agents.
• Flexible for mono-repos.
• Scalable for large teams.

短所だ：

• Requires infrastructure management.
• Limited cloud-hosted features.

最適： Teams prioritizing security and custom infrastructure.

18. Codeship

概要 Codeship, by CloudBees, is a cloud-based CI/CD tool with a focus on simplicity and integration with security scanning tools.

主な特徴

• Parallel test pipelines for speed.
• Docker support for containerized builds.
• Integration with GitHub, Bitbucket, and Snyk.
• Free plan with 100 builds/month.

長所だ：

• Easy setup for small projects.
• Strong security integrations.
  Affordable pricing.

短所だ：

• Limited for complex pipelines.
• Performance issues with large projects.

最適： Small teams needing secure, quick CI/CD setups.

19. Jenkins X

概要 Jenkins X is an open-source CI/CD tool tailored for cloud-native apps on Kubernetes, incorporating GitOps principles.

主な特徴

• Serverless mode for resource efficiency.
• Built-in GitOps for environment management.
• Automated microservices deployment.
• Docker and Kubernetes support.

長所だ：

• Free and open-source.
• Optimized for Kubernetes.
• Strong community support.

短所だ：

• Limited to cloud-native workflows.
• Complex for non-Kubernetes users.

最適： Teams deploying microservices on Kubernetes.

20. Buddy

概要 Buddy is a user-friendly CI/CD tool that simplifies pipeline creation with a drag-and-drop interface and Docker support.

主な特徴

• Over 100 pre-built actions for pipelines.
• Docker layer caching for faster builds.
• Parallel builds and testing.
• Slack and GitHub integrations.

長所だ：

• Intuitive GUI for non-technical users.
• Free plan with 120 pipeline runs/month.
• Fast deployment times.

短所だ：

• Limited granularity for complex workflows.
• Paid plans start at $75/month.

最適： Small teams and non-technical users automating simple pipelines.

21. Octopus Deploy

概要 Octopus Deploy specializes in automated deployment and release management, complementing CI tools for robust CD pipelines.

主な特徴

• Multi-environment deployment support.
• Runbooks for operational tasks.
• Integration with Jenkins, TeamCity, and Azure DevOps.
• Role-based access control.

長所だ：

• Simplifies complex deployments.
• Strong auditing for compliance.
• Free for small teams.

短所だ：

• Focused on CD, requiring a separate CI tool.
• Premium pricing for large-scale use.

最適： Teams needing advanced deployment automation.

22. Tekton

概要 Tekton is an open-source, Kubernetes-native CI/CD framework designed for building reusable, cloud-native pipelines.

主な特徴

• Declarative pipeline definitions.
• Reusable task catalogs for modularity.
• Integration with Kubernetes and Knative.
• Event-driven automation.

長所だ：

• Free and open-source.
• Highly extensible for Kubernetes.
• Growing community support.

短所だ：

• Requires Kubernetes expertise.
• Limited for non-Kubernetes environments.

最適： Teams building cloud-native, Kubernetes-based pipelines.

Choosing the Right CI/CD Tool in 2025

Selecting the ideal CI/CD tool depends on your team’s goals, infrastructure, and expertise. Consider these factors:

• Project Complexity: Jenkins, Azure DevOps, and GitLab CI/CD handle complex, large-scale projects, while Buddy and Codeship suit simpler workflows.
• Ecosystem Compatibility: Choose AWS CodePipeline for AWS stacks, Bamboo for Atlassian, or GitHub Actions for GitHub-centric teams.
• Deployment Environment: Cloud-based tools like CircleCI and Semaphore offer ease of use, while TeamCity and Buildkite provide on-premises control.
• 予算 Free tools like Jenkins, GoCD, and Argo CD are cost-effective, while Harness and TeamCity require investment for premium features.
• Team Skill Level: Beginner-friendly tools like Buddy and GitHub Actions are accessible, while Spinnaker and Jenkins demand technical proficiency.

In 2025, prioritize tools with AI automation, GitOps support, and DevSecOps features to align with modern DevOps trends.

Trends Shaping CI/CD in 2025

• AI-Driven Automation: Harness and CircleCI leverage AI to optimize pipelines and predict failures.
• GitOps Workflows: Argo CD, Jenkins X, and Codefresh emphasize Git-based configuration for reproducibility.
• DevSecOps Integration: GitLab CI/CD and Codeship incorporate security scanning for secure code delivery.
• Kubernetes-Native Tools: Tekton, Argo CD, and Codefresh cater to containerized, cloud-native workflows.
• Low-Code Pipelines: Buddy and GitLab CI/CD simplify automation for non-technical users.

結論

The CI/CD landscape in 2025 is vibrant, offering tools like Jenkins, GitLab CI/CD, CircleCI、 そして Argo CD to meet diverse DevOps needs. From open-source flexibility to AI-driven automation and Kubernetes-native solutions, these 20+ best CI/CD pipeline tools empower teams to deliver software faster and more reliably. By choosing the right tool based on project requirements, teams can optimize their DevOps workflows for success. カーマテック, a leader in DevOps そして ソフトウェア開発, harnesses these tools to deliver innovative, scalable solutions for clients worldwide. Partner with カーマテック to transform your CI/CD pipelines and drive excellence in software delivery.