23 Best Continuous Integration Tools You Can’t Ignore

Best Continuous Integration Tools Shortlist

After assessing various tools, I've curated a list of the best continuous integration tools to address the DevOps challenges you face.

1. Codefresh - Best for Docker/Kubernetes workflows
2. Strider - Best for extensible open-source enthusiasts
3. Semaphore - Best for high-speed CI/CD pipelines
4. TeamCity - Best for deep customization capabilities
5. GoCD - Best for visualizing complex workflows
6. Atlassian Bamboo - Best for Atlassian tool suite integration
7. Azure Pipelines - Best for Microsoft-based projects
8. CircleCI - Best for multi-platform builds
9. Bitbucket Pipelines - Best for Bitbucket code repositories
10. Jenkins - Best for vast plugin availability
11. AWS CodePipeline - Best for AWS cloud-native apps
12. GitLab - Best for integrated CI/CD with source control

Continuous integration tools are the unsung heroes of the software world. They provide automation, ensuring that every piece of code integrates harmoniously with existing functionality. Think of it this way: with every change in version control, these tools swing into action, streamlining continuous delivery and helping prevent those pesky, unexpected errors.

The real magic? They tackle the challenges of manual integration, time-consuming deployments, and the chaotic jumble that can arise from multiple code contributions. Trust me, if you're looking to simplify your development process, diving into these tools is a game-changer.

What Is a Continuous Integration Tool?

Continuous integration tools are software platforms employed primarily by developers and DevOps teams to automatically integrate code changes from multiple contributors into a single project. By ensuring that each integration undergoes automated tests and validations, these tools streamline the development process, reducing errors and enhancing efficiency.

Their primary function is to facilitate rapid and reliable software builds, making it easier for teams to maintain consistent code quality and expedite the release of software updates or new features.

Overviews of the 12 Best Continuous Integration Tools

1. Codefresh - Best for Docker/Kubernetes workflows

Codefresh stands out as a cutting-edge CI/CD platform tailor-made for the modern world of containerization. Specifically designed with Docker and Kubernetes in mind, it meets the demands of teams diving deep into these workflows, justifying its title as the best pick for such environments.

Why I Picked Codefresh:

During my evaluations, Codefresh rose to prominence because of its distinct focus on Docker and Kubernetes, positioning it differently from many other CI/CD tools. This specialization made my choice clear when considering a tool for Docker/Kubernetes-intensive projects. It's not merely about compatibility; Codefresh is molded around these technologies, making it a natural selection for those environments.

Standout Features & Integrations:

Codefresh offers a deep integration with Docker, simplifying the container lifecycle from creation to deployment. With a built-in Helm environment, it ensures that Kubernetes deployments are consistent and efficient. Among its many integrations, the platform excels in connections to popular platforms such as git and Java environments.

Pricing:

From $7/user/month (min 5 seats)

Pros:

• Comprehensive Docker and Kubernetes integration
• Robust support for git repositories
• Customizable pipelines tailored to specific workflows

Cons:

• Potentially steep learning curve for those new to Kubernetes
• Less intuitive for projects outside the realm of containerization
• Limited default support for Windows-based applications

2. Strider - Best for extensible open-source enthusiasts

Strider is a robust open-source continuous integration and deployment platform, enabling developers to effortlessly handle their projects with a strong focus on extensibility. For those deeply entrenched in the open-source realm, Strider’s adaptability shines, hence it earns its title as the go-to for extensible open-source enthusiasts.

Why I Picked Strider:

During my exploration of CI/CD tools, Strider became a standout pick. Its open-source nature, combined with a design centered on extensibility, was unparalleled in my comparison of various tools. I determined that for those who value open-source platforms and desire customization without bounds, Strider fits the bill.

It's precisely its inherent adaptability that solidifies its spot as the best for open-source enthusiasts.

Standout Features & Integrations:

Strider comes with a powerful API that grants developers extensive control over their pipelines. It offers excellent management of dependencies, ensuring projects remain streamlined and free from potential integration hitches. Its integrations include connections to platforms such as "buddy" and tools that allow for real-time notifications to keep teams in the loop.

Pricing:

Pricing upon request

Pros:

• Rich API for enhanced control and customization
• Excellent management of dependencies
• Real-time notifications to keep the workflow informed

Cons:

• Might be a bit complex for beginners
• Dependency on third-party plugins for some advanced functionalities
• Limited out-of-the-box integrations compared to commercial tools

3. Semaphore - Best for high-speed CI/CD pipelines

Semaphore has carved its niche as a powerful CI/CD platform, renowned for offering some of the fastest automation pipelines in the industry. Speed, as we know, is pivotal in the world of software development, and this is where Semaphore excels, making it the optimal choice for those craving high-speed CI/CD pipelines.

Why I Picked Semaphore:

In the vast landscape of CI/CD tools, choosing the right one is no small feat. Through my evaluations, I judged Semaphore to be exceptional, especially when it came to its unmatched pipeline speeds. It's this distinct edge in velocity that influenced my selection, making it the obvious choice for teams prioritizing speed in their software development cycle.

Standout Features & Integrations:

Semaphore prides itself on its capacity to handle complex software development tasks without compromising on speed. While it’s available on-premises, it also offers cloud solutions to cater to diverse project needs. With tight integration capabilities, it comfortably supports a plethora of open-source projects, ensuring your source code always remains in harmony with the most popular repositories.

Pricing:

From $20/user/month (billed annually)

Pros:

• Lightning-fast CI/CD pipelines, ideal for rapid deployments
• Excellent support for both on-premises and cloud setups
• Wide-ranging integrations for open-source projects

Cons:

• Might be overkill for smaller projects or teams
• The interface can be daunting for newcomers
• Higher price point compared to some other CI/CD tools

4. TeamCity - Best for deep customization capabilities

TeamCity is a robust CI/CD platform developed by JetBrains, tailored to offer the software development industry's in-depth customization. The flexibility TeamCity provides, especially when it comes to personalizing the deployment process, undoubtedly places it in a favorable position for those who prioritize deep customization capabilities.

Why I Picked TeamCity:

In the process of selecting the right CI/CD tools, TeamCity continuously emerged at the forefront of my comparisons. I chose it primarily due to its unparalleled customization depth. From my perspective, its unique ability to adapt to various software deployment nuances makes it indispensable for teams and individuals who desire a tailored approach to continuous deployment.

Standout Features & Integrations:

TeamCity offers an agile environment conducive to iterative software development. Its advanced debugging tools stand out, helping developers pinpoint and resolve issues faster. For those developing on the Apple ecosystem, TeamCity provides reliable iOS integration, ensuring a smoother deployment process for Apple devices.

Pricing:

From $20/user/month (billed annually)

Pros:

• Exceptional customization options for tailored deployment processes
• Agile-oriented features facilitating iterative development
• Comprehensive debugging tools for swift issue resolution

Cons:

• Steeper learning curve for those new to CI/CD tools
• Can be resource-intensive, especially for larger projects
• Some integrations might require additional plugins or configurations.

5. GoCD - Best for visualizing complex workflows

GoCD is a powerful CI server that focuses on assisting development teams in streamlining their build process with an emphasis on workflow visualization. With its intuitive user interface, GoCD makes it significantly easier for teams to understand, manage, and optimize complex workflows, which is particularly crucial for larger projects with intricate build and deployment processes.

Why I Picked GoCD:

When determining the optimal tools for my list, GoCD consistently stood out. I chose it because of its distinct focus on visual representation, which is pivotal in comprehending intricate workflows.

The emphasis it places on providing a clear visual of the build process positions it as the ideal choice for those needing to understand and manage complex workflows.

Standout Features & Integrations:

One of GoCD's key strengths is its user-friendly interface, designed to provide a comprehensive view of the build process. This focus on visualization means that users can anticipate potential bottlenecks or inefficiencies and make necessary adjustments.

Furthermore, GoCD integrates with a wide range of tools, ensuring that development teams can maintain their preferred tools while benefiting from GoCD's visual insights.

Pricing:

Pricing upon request

Pros:

• Intuitive user interface that prioritizes visualization
• Facilitates a clearer understanding of the build process, aiding in optimization
• Wide range of integrations ensures compatibility with existing tools

Cons:

• Might be overwhelming for smaller teams with simpler workflows
• The depth of features can introduce a learning curve for new users
• Some advanced configurations may require manual interventions.

6. Atlassian Bamboo - Best for Atlassian tool suite integration

Atlassian Bamboo is a robust CI/CD tool designed to facilitate and automate the build and deployment process. Its inherent strength lies in its deep integration with other Atlassian products, offering a cohesive experience for those already using the Atlassian tool suite.

Why I Picked Atlassian Bamboo:

In my journey of selecting CI/CD tools, Atlassian Bamboo made a clear impression. I chose it primarily for its unparalleled integration capabilities with other Atlassian products, creating a unified experience.

This tool is best suited for teams looking to maximize their investment in the Atlassian tool suite and need a tightly integrated CI/CD solution.

Standout Features & Integrations:

Atlassian Bamboo excels in offering a streamlined build and deployment pipeline, suitable for both open-source CI projects and proprietary ones. Its pull request automation ensures that the code gets tested before merging. Furthermore, Bamboo's comprehensive integration with tools like Jira and Bitbucket means teams can manage tasks, source code, and deployments under one umbrella.

Pricing:

From $10/user/month (billed annually)

Pros:

• Comprehensive integration with Atlassian tools enhances the overall workflow.
• Effective pull request automation facilitates early code testing.
• Offers a self-hosted solution ensuring more control over the environment.

Cons:

• Might not be the first choice for those not already invested in the Atlassian ecosystem.
• The learning curve for users new to the Atlassian suite.
• Some open-source CI alternatives might offer more flexible configurations.

7. Azure Pipelines - Best for Microsoft-based projects

Azure Pipelines is a CI/CD service that works comprehensively on both public and private cloud configurations, offering scalable and reliable pipelines. Primarily designed by Microsoft, it naturally offers a heightened integration with Microsoft-based projects and solutions.

Why I Picked Azure Pipelines:

After comparing multiple tools, I selected Azure Pipelines for its robust performance and dedicated support for Microsoft platforms. It's a tool that undoubtedly shines when used in synergy with Microsoft projects, making it distinct in the vast sea of CI/CD options.

In my judgment, it truly stands out as the go-to for anyone deeply invested in the Microsoft ecosystem.

Standout Features & Integrations:

Azure Pipelines is renowned for its extensive automated testing capabilities, ensuring that applications run reliably and efficiently. Another notable feature is its superior caching mechanisms, which optimize build times significantly. When talking about integrations, its tie-in with Visual Studio and other Microsoft solutions is extensive, empowering development teams to work more cohesively.

Pricing:

From $30/user/month (billed annually)

Pros:

• Deep integration with Microsoft tools, especially Visual Studio.
• Strong automated testing capabilities enhance reliability.
• Efficient caching mechanisms speed up build times.

Cons:

• Might be less intuitive for those not accustomed to the Microsoft ecosystem.
• Pricing can be steep for small development teams.
• Limited flexibility compared to some open-source alternatives.

8. CircleCI - Best for multi-platform builds

CircleCI is a Continuous Integration and Continuous Deployment tool that allows development teams to automate their pipeline, from code commit to deployment. Its capacity for building across multiple platforms simultaneously sets it apart, making it particularly suitable for projects that target various environments.

Why I Picked CircleCI:

After thoroughly assessing and comparing various CI/CD tools, I determined CircleCI to be superior in handling builds for multiple platforms. What differentiates it is its innate ability to compile code cross-platform without much fuss. From my observations and comparisons, it stands as the optimal choice for projects that require builds to be deployed across diverse platforms.

Standout Features & Integrations:

CircleCI boasts an easy installation process that doesn’t burden the team, speeding up the initial setup phase. Moreover, its integration process is straightforward, aiding teams in connecting their repositories and setting up build processes without hurdles. Some of its significant integrations include GitHub, Bitbucket, and Slack, ensuring cohesive and synchronized development workflows.

Pricing:

From $30/user/month

Pros:

• Robust multi-platform build capabilities.
• Streamlined integration process with major repositories.
• Easy installation accelerates the initial setup.

Cons:

• May require some learning curve for those new to CI/CD.
• Certain advanced configurations might appear complex.
• Not always the most cost-effective for very small teams.

9. Bitbucket Pipelines - Best for Bitbucket code repositories

Bitbucket Pipelines is an integrated CI/CD service built into Bitbucket. It aids developers in building, testing, and deploying their code directly from their Bitbucket repository. Given its integration with Bitbucket repositories, it stands out as an optimal choice for teams heavily invested in the Bitbucket ecosystem.

Why I Picked Bitbucket Pipelines:

Having judged and compared various CI/CD tools, I chose Bitbucket Pipelines primarily for its native integration with Bitbucket code repositories. Its distinction lies in its inherent compatibility with Bitbucket, eliminating the need for third-party integrations.

My opinion is that it's the most fitting tool for those prioritizing integration with Bitbucket repositories.

Standout Features & Integrations:

Bitbucket Pipelines supports parallel execution, allowing multiple tasks or test suites to run simultaneously, expediting the build process. As an open-source tool, it offers transparency and the potential for customization. It integrates smoothly with a wide array of providers, ensuring that teams can connect their preferred tools without hassle.

Pricing:

From $3/user/month (billed annually)

Pros:

• Direct integration with Bitbucket repositories.
• Capability for parallel execution speeds up builds.
• Open-source nature offers transparency and customization potential.

Cons:

• Limited to Bitbucket, which may not suit all teams.
• Requires understanding of specific Bitbucket Pipelines syntax.
• Absence of some advanced features available in standalone CI/CD tools.

10. Jenkins - Best for vast plugin availability

Jenkins is an open-source automation server that facilitates the technical aspects of continuous integration and continuous delivery (CI/CD). It empowers developers and teams to reliably build, test, and deploy their software projects. The sheer volume and diversity of plugins available for Jenkins underscore its adaptability and its niche as the tool of choice for those prioritizing extensibility.

Why I Picked Jenkins:

After extensively comparing various CI/CD tools, I selected Jenkins largely due to its expansive plugin ecosystem. This aspect truly makes it stand out, offering versatility to cater to unique project needs.

I believe it's unparalleled when it comes to plugin availability, making it best for those who require a wide range of integrations and customizations.

Standout Features & Integrations:

Jenkins is famed for its flexibility, allowing team members to run tests, build processes, and deployments as per project needs. The vast array of plugins ensures that virtually any tool or platform can be integrated, making it ideal for diverse software projects. Its integration capabilities span across numerous SaaS products, databases, build tools, and version control systems.

Pricing:

Jenkins is open-source and free to use.

Pros:

• Extensive plugin ecosystem catering to myriad requirements.
• Suitable for a diverse range of software projects due to its flexibility.
• Can be scaled across large team members and projects.

Cons:

• Initial setup can be complex, especially for newcomers.
• Interface might appear dated compared to newer CI/CD tools.
• Maintenance overhead can increase with too many plugins.

11. AWS CodePipeline - Best for AWS cloud-native apps

AWS CodePipeline is a continuous integration and continuous delivery (CI/CD) service provided by Amazon Web Services (AWS). It is specifically designed to streamline the process of automating the release of applications built within the AWS ecosystem. Given its cloud-native design tailored for AWS services, it's a natural choice for AWS cloud-native apps.

Why I Picked AWS CodePipeline:

When selecting tools for this list, AWS CodePipeline stood out due to its deep integration with the AWS environment. In my judgment, the ability to create and visualize a value stream map of the application lifecycle sets it apart from other CI/CD tools.

The service's cloud-native structure and profound AWS compatibility make it the top pick for applications that are deeply rooted in the AWS ecosystem.

Standout Features & Integrations:

AWS CodePipeline shines with features such as the ability to model and visualize different stages of the application lifecycle. Its capability to run builds on a virtual machine or directly in a container is particularly advantageous. Integrations-wise, it connects with other AWS services such as AWS Lambda, Amazon EC2, and AWS Elastic Beanstalk, enhancing its utility for AWS users.

Pricing:

Pricing for AWS CodePipeline starts at $1.00 per active pipeline per month. Additional costs may be incurred based on associated AWS services used alongside it.

Pros:

• Deep integration with the AWS ecosystem.
• Ability to create and visualize a value stream map.
• Flexibility in choosing build environments, be it virtual machines or containers.

Cons:

• Learning curve for those unfamiliar with AWS services.
• Can get expensive for complex workflows due to associated AWS service charges.
• Limited utility outside the AWS environment.

12. GitLab - Best for integrated CI/CD with source control

GitLab offers a complete DevOps platform to manage every stage of the software development lifecycle. One of its strengths is the tight integration between source control and CI/CD, allowing developers to oversee the journey from new code to deployment in one unified platform.

Why I Picked GitLab:

In the process of selecting tools, GitLab caught my attention due to its comprehensive integration of CI/CD pipelines directly within the source control. Judging from its robustness and the opinions of many developers, GitLab provides a unique advantage by merging two crucial software development aspects.

I determined it as "best for..." because having CI/CD and source control combined diminishes the complexity and ensures smooth transitions from new code writing to deployment.

Standout Features & Integrations:

One of GitLab's most noteworthy features is its built-in CI/CD which eliminates the need for third-party solutions. The platform supports docker containers, facilitating streamlined testing and deployment processes. Furthermore, while GitLab prominently supports Git, it also integrates with tools like Buildbot and systems using Mercurial, providing developers with diverse options.

Pricing:

Pricing for GitLab starts from $4/user/month. This is for their "Premium" tier, with higher tiers available for more features and benefits.

Pros:

• Integrated CI/CD and source control reduces context switching.
• Support for Docker containers enhances deployment workflows.
• Integrates with diverse tools, including Buildbot and systems using Mercurial.

Cons:

• The wide array of features might be overwhelming for new users.
• Performance can sometimes lag with very large repositories.
• CI runners, when self-hosted, may need regular maintenance.

Other Noteworthy Continuous Integration Tools

Below is a list of additional continuous integration tools that I shortlisted, but did not make it to the top 12. These are definitely worth checking out.

13. GitHub - Good for native integration with the world's largest developer platform
14. Azure DevOps Server - Good for hybrid cloud on-premises CI/CD solutions
15. Spinnaker - Good for multi-cloud deployment strategies
16. Pantheon - Good for web ops teams in open-source CMS
17. CloudBees - Good for Jenkins-focused CI/CD enhancements
18. Copado - Good for Salesforce DevOps automation
19. Travis CI - Good for integration with GitHub projects
20. Buddy - Good for visually constructed CI/CD pipelines
21. AutoRABIT - Good for Salesforce CI/CD with data migration
22. Drone - Good for container-native CI/CD processes
23. Concourse CI - Good for scalable and modular CI/CD pipelines.

Selection Criteria for Choosing the Best Continuous Integration Tools

Choosing a CI/CD tool is no easy task, especially when there's a plethora of options available. Over the years, I've evaluated dozens of CI/CD tools. While many of them bring something unique to the table, not all fit the bill when it comes to ensuring smooth software delivery and integration.

From my experience, testing, and research, I've narrowed down the criteria that I believe are pivotal for anyone in the market for such software.

Core Functionality

• Code Integration: Ability to consistently integrate new code with the existing codebase, ensuring that everything works as expected.
• Automated Testing: Should facilitate the automatic running of tests, highlighting errors and bugs before they reach the production environment.
• Deployment: Ensures the absolute and efficient deployment of the application to various environments, be it staging, testing, or production.
• Rollbacks: Provides the capability to revert to a previous version if a deployment fails or causes issues.

Key Features

• Parallel Execution: This speeds up the CI/CD process by executing multiple tasks or test cases simultaneously.
• Container Support: Given the growing use of Docker containers, the tool should inherently support building, testing, and deploying containers.
• Customizable Workflows: Allows teams to tailor their CI/CD process, adding or removing steps as per the project needs.
• Notifications & Alerts: Real-time notifications about build status, test results, and deployment success or failures.
• Scalability: The tool should scale with the project, accommodating an increasing load or more complex tasks without performance hitches.
• Security: Ensures that the CI/CD process is secure with features like role-based access, secret management, and secure integrations.

Usability

• Intuitive Dashboard: A clear, uncluttered dashboard that provides a bird's-eye view of the entire CI/CD process, highlighting bottlenecks and successes.
• Interactive Visualization: Tools that provide visual representations, such as flowcharts or diagrams, make it easier to understand and monitor the pipeline's progress.
• Configurable Access: Role-based access ensures that team members see and modify only what they need to, promoting security and clarity.
• Support & Documentation: A rich knowledge base, tutorials, and responsive customer support are essential, especially when teams are trying to troubleshoot or understand advanced features.
• Integration with Popular Platforms: The tool should easily integrate with popular platforms like GitHub, Docker, or cloud services, eliminating the need for complex configurations.

As you delve into the realm of CI/CD tools, remember to weigh these criteria against your specific needs and the tool's offering. A bit of research and testing on the front end can save a lot of time and resources in the long run.

Most Common Questions Regarding Continuous Integration Tools

What are the benefits of using continuous integration tools?

Continuous integration tools offer a myriad of advantages for development teams and projects:

• Immediate Feedback: Developers get instant feedback on code changes, ensuring that errors are detected and fixed early in the development cycle.
• Faster Release Rates: Automating the build and test processes accelerates software releases, enabling frequent updates and quicker bug fixes.
• Enhanced Code Quality: Regular integration and testing mean higher code quality, as issues are identified and addressed promptly.
• Collaboration Boost: These tools facilitate better collaboration among team members by streamlining and automating many manual tasks, thus avoiding bottlenecks.
• Reduced Integration Risks: By integrating regularly, developers can identify and address conflicts early, reducing the complexities usually associated with late-stage integration.

How much do continuous integration tools typically cost?

The pricing of continuous integration tools can vary widely based on their features, scalability, and target audience. While some tools cater to individual developers and offer free tiers, others are geared toward enterprises and may cost thousands of dollars monthly.

What are the typical pricing models for these tools?

There are several pricing models commonly associated with CI tools:

• Per User: Pricing is based on the number of users or team members accessing the tool.
• Per Build Minute: Some tools charge based on the total build minutes consumed.
• Flat Monthly/Annual Fee: A fixed monthly or yearly fee, often with different tiers based on features or scale.
• Freemium: Some tools offer a basic version for free, with advanced features available in premium paid versions.

What is the typical range of pricing for these tools?

Prices can start as low as $5/user/month for basic plans, while enterprise plans catering to larger teams with extensive features can range upwards of $1,000/month.

Which are some of the most expensive software options?

Tools like CloudBees, Copado, and Pantheon often fall on the pricier end due to their extensive feature set tailored for enterprise-grade projects.

Are there any cheaper or budget-friendly options?

Yes, platforms like Travis CI, Buddy, and Drone often provide more budget-friendly plans, making them suitable for startups or individual developers.

Do any of these tools offer free options?

Certainly! GitHub, GitLab, and Travis CI, among others, offer free tiers. However, it's important to note that these free versions may have limitations in terms of features, build minutes, or the number of concurrent jobs.

Are the free versions of these tools limited in functionality?

Typically, yes. Free versions may restrict the number of builds, limit concurrent jobs, or exclude premium features. However, they can still be valuable for individual developers or smaller projects that don't require extensive resources or advanced functionalities.

Other Continuous Integration Tool Reviews

• Continuous Deployment Tools
• CI/CD Tools
• Continuous Delivery Tools
• Data Integration Tools

Summary

Selecting the ideal continuous integration tool is paramount for streamlining software development, ensuring code quality, and achieving faster deployment. Throughout this guide, I've delved deep into the nuances of various tools, highlighting their unique selling points, and presenting criteria that will assist in making an informed decision.

Key Takeaways

1. Holistic understanding is key: It's essential to not just focus on the surface features but also comprehend the core functionalities of the CI tool. This ensures the tool aligns with your project's needs and can cater to your development process without unnecessary complications.
2. Usability matters: Beyond core features, the design, ease of onboarding, and interface can greatly influence a team's productivity. A tool that's intuitive can significantly reduce the learning curve, while strong customer support can make a world of difference during critical times.
3. Consider pricing and flexibility: While many tools offer a range of pricing models, it's vital to discern which offers the best value for your investment. Additionally, understand the scalability and flexibility of the tool, as your requirements may evolve over time. Don't shy away from considering both premium tools and cost-effective alternatives, ensuring the chosen software aligns with both your budgetary constraints and long-term vision.

What Do You Think?

I strive to keep my guide comprehensive and up-to-date. If there's a continuous integration tool you believe deserves a spot on my list or one you've had a particularly positive experience with, I'd love to hear about it. Drop me a suggestion, and let's enrich this resource together. Your insights are invaluable to me and the broader community.