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Cline
AI Code & DevFree

Cline

Open-source autonomous coding agent for VS Code with full transparency

4.9rating
5.3Kviews
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Code AssistantPair ProgrammingAutomation
Also reviewed as an Agent — Coding
See the agent-focused review of Cline

About Cline

Cline is an open-source autonomous coding agent that brings a new twist to the coding experience within Visual Studio Code. Designed with the developer in mind, it aims to enhance coding efficiency and streamline workflows through automation. What I found particularly intriguing is its ability to integrate with various AI providers, including heavyweights like OpenAI and Google Gemini, as well as local models. This means you can choose the AI that best suits your needs, whether you’re debugging, generating code, or even pair programming. The transparency of the tool is a significant draw, as it allows users to maintain control over permissions, making it feel less like a black box and more like a collaborative partner in your coding journey.

The interface is user-friendly, which is a plus for newcomers to programming, but it also doesn’t skimp on features that seasoned developers crave. I had no trouble navigating through extensive codebases and executing terminal commands, which, let’s be honest, can be a bit tedious without a reliable assistant. One of the standout moments was when Cline helped me refactor a particularly messy piece of code. The suggestions it provided were spot-on and saved me a good hour of head-scratching. For teams, this tool could foster better collaboration, allowing multiple developers to work in tandem without stepping on each other's toes.

Now, before you rush to install Cline, let’s talk pricing: it’s free. That’s right—zero pounds. You might think that sounds too good to be true, but this is where Cline shines. Being open-source means the community is actively contributing to its improvement, which is a breath of fresh air in a market often dominated by pricey subscriptions. However, being free also raises concerns about support and consistency. While the community backing is solid, I did encounter some bugs here and there, especially when integrating with certain AI providers. It’s not a dealbreaker, but it’s something to keep in mind.

Overall, Cline is an exciting tool for developers who want to level up their coding game. It excels in providing a transparent, collaborative coding environment, making it easier to navigate the complexities of modern programming. However, it may not be for everyone—particularly those who prefer a more polished, commercially supported product. If you’re someone who appreciates the chaos of open-source and enjoys contributing to a tool's evolution, then Cline could be your new best friend in coding.

Our Review

Verified 11 May 2026

Reviewed by Delv Editorial, Delv Team

When I first stumbled upon Cline, I was intrigued by the concept of an open-source coding assistant specifically tailored for Visual Studio Code. As someone who spends a fair amount of time wrestling with code, the idea of having an AI partner felt like a dream come true. So, I decided to dive in and see what all the fuss was about. Right off the bat, I was impressed by how easy it was to set up. Within minutes, I was navigating through my codebases with a little digital buddy by my side, ready to lend a hand.

One of the features that really stood out to me was Cline's integration with multiple AI providers. This flexibility means that you can choose the AI that suits your coding style or project requirements. I found it helpful when debugging; depending on the context of the code I was working on, certain AIs provided better suggestions than others. It’s almost like having a virtual team of coders at your disposal, each with their own strengths.

However, it’s not all sunshine and rainbows. While I appreciated the open-source nature of Cline, I did encounter a few bugs along the way. For example, during one session, it struggled to execute terminal commands correctly, which led to some frustrating moments as I tried to figure out if it was me or the tool. And while the community support is generally robust, there were instances where I felt abandoned, waiting for answers that just didn’t come. It made me realise that with free tools, you often get what you pay for in terms of support.

When I compared Cline to something like GitHub Copilot, the differences became apparent. Copilot is slick, polished, and has a dedicated support team behind it, but it comes at a cost. If you’re willing to pay for that kind of reliability, it’s a fantastic option. However, if you’re just starting out or on a tight budget, Cline offers a compelling alternative.

Overall, I think Cline is perfect for developers who enjoy the thrill of open-source software and want to play an active role in its evolution. It’s a fantastic tool for learning and collaboration, but if you’re after a flawless, commercial-grade coding assistant, you might want to keep looking. The pricing is unbeatable, but just remember to keep your expectations in check when it comes to performance. In my experience, it’s a solid addition to any developer’s toolkit, especially for those who thrive in a more hands-on environment.

Getting started with Cline

In this guide, you will learn how to set up Cline, an open-source autonomous coding agent for Visual Studio Code, and start automating your coding tasks effectively.

Step 1: Sign up and set up

  • Visit the [Cline website](https://cline.bot).
  • Click on the **Get Started** button, which will redirect you to the GitHub repository.
  • Follow the instructions in the repository to install the Cline extension in Visual Studio Code. This typically involves downloading the extension from the Visual Studio Code Marketplace.
  • Once installed, open Visual Studio Code and find Cline in the Extensions panel (click on the Extensions icon in the sidebar).
  • Click on **Enable** to activate the Cline extension.
  • Step 2: Your first coding task

  • Open a new or existing project in Visual Studio Code.
  • In the Command Palette (press `Ctrl + Shift + P` or `Cmd + Shift + P` on Mac), type **Cline: Start Coding** and select it.
  • You will be prompted to choose an AI provider. Select either OpenAI, Google Gemini, or a local model that you have set up.
  • Begin typing your coding request in the input box that appears. For example, type "Create a function to sort an array".
  • Press **Enter**, and Cline will generate the code based on your prompt. Review and modify the code as necessary.
  • Step 3: Get better results

  • Use clear and specific prompts. Instead of vague requests like "Help me with my code", specify the task: "Write a function to fetch data from an API".
  • Familiarise yourself with the **Settings** panel by clicking on the gear icon next to the extension in the Extensions panel. Here, you can adjust preferences for AI providers and response styles.
  • Explore the **Cline Documentation** available in the GitHub repository for advanced features and examples.
  • Pro tip

    Set up keyboard shortcuts for frequently used Cline commands. Go to File > Preferences > Keyboard Shortcuts and search for Cline commands to streamline your workflow.

    Common mistake to avoid

    Avoid using overly complex or ambiguous prompts. This can lead to inaccurate or incomplete code generation. Stick to clear, concise requests to get the best results from Cline.

    The Verdict

    Cline is a solid recommendation for developers who appreciate an open-source environment and want a flexible coding assistant without the financial burden. However, those seeking a polished, fully supported experience should consider alternatives like GitHub Copilot. If you’re a freelance developer or part of a collaborative team, give Cline a try; just be prepared for a few hiccups along the way.

    Best For

    • Freelance developers who need a cost-effective coding assistant.
    • Teams working on collaborative projects requiring a flexible coding environment.
    • Newcomers to programming looking for an approachable tool to aid their learning.
    • Experienced developers wanting to automate repetitive tasks.
    • Open-source enthusiasts keen on contributing to software evolution.

    At a Glance

    Cline is an open-source coding assistant for Visual Studio Code that integrates with multiple AI models, offering developers a transparent and collaborative coding experience. It's free, making it an excellent choice for those looking to enhance their coding efficiency without breaking the bank.

    Strengths

    • +The integration with multiple AI providers is a standout feature, allowing developers to choose the AI that best meets their specific coding needs and preferences.
    • +Being open-source means that Cline benefits from community contributions, leading to continuous improvement and a variety of perspectives on coding challenges.
    • +The user-friendly interface makes it accessible for both seasoned developers and newcomers, allowing anyone to get started without a steep learning curve.
    • +Cline's ability to navigate extensive codebases and execute terminal commands simplifies tasks that would otherwise consume valuable coding time.
    • +The transparency of Cline allows developers to maintain control over permissions, making it a more trustworthy tool for collaborative coding.
    • +It's completely free, which is a significant advantage in a market where many coding assistants come with hefty subscription fees.

    Limitations

    • -Although Cline is free, it sometimes feels undercooked compared to paid alternatives, with occasional bugs that can disrupt workflow.
    • -The reliance on community support may lead to inconsistent user experiences, particularly if you encounter issues that are not widely addressed.
    • -Some advanced features may not be as polished as those found in commercial tools, potentially leading to frustration for developers seeking seamless functionality.
    • -Integrating with certain AI providers can be hit-or-miss, and I found that not all integrations worked smoothly, which may hinder productivity at times.
    • -The learning curve for some of the more complex features can be steep, especially for beginners who might feel overwhelmed without a structured guide.

    Use Cases

    • -Freelance developers looking for an affordable coding assistant that doesn't compromise on quality can benefit significantly from Cline.
    • -Teams working on collaborative projects can use Cline to streamline their coding process, reducing the risk of conflicts and improving code quality.
    • -Newcomers to programming can leverage Cline’s user-friendly interface to learn coding concepts without feeling lost in complicated tools.
    • -Experienced developers can use Cline to automate repetitive tasks, freeing up time for more complex problem-solving.
    • -Open-source enthusiasts who want to contribute to the evolution of coding tools will find Cline’s community-driven approach refreshing.

    Alternatives

    GitHub Copilot - a well-known AI pair programmer that offers a more polished experience and direct support from GitHub, but comes with a subscription fee.
    Tabnine - another AI coding assistant that focuses on predictive suggestions, ideal for those who want a tool that integrates seamlessly into their existing workflow.
    Kite - offers a free tier with powerful code completions but lacks the open-source aspect that Cline brings, making it less flexible for customisation.
    Replit - while more of a coding platform than a direct competitor, it offers collaborative coding features that some teams might find appealing.
    Codeium - a free tool that provides code suggestions and completions, but may not have the same level of customisation as Cline.

    Frequently Asked Questions

    Cline is an open-source coding assistant for Visual Studio Code that integrates with multiple AI models, offering developers a transparent and collaborative coding experience. It's free, making it an excellent choice for those looking to enhance their coding efficiency without breaking the bank.
    The key advantages of Cline include: The integration with multiple AI providers is a standout feature, allowing developers to choose the AI that best meets their specific coding needs and preferences.. Being open-source means that Cline benefits from community contributions, leading to continuous improvement and a variety of perspectives on coding challenges.. The user-friendly interface makes it accessible for both seasoned developers and newcomers, allowing anyone to get started without a steep learning curve.. Cline's ability to navigate extensive codebases and execute terminal commands simplifies tasks that would otherwise consume valuable coding time.. The transparency of Cline allows developers to maintain control over permissions, making it a more trustworthy tool for collaborative coding.. It's completely free, which is a significant advantage in a market where many coding assistants come with hefty subscription fees..
    Some limitations of Cline include: Although Cline is free, it sometimes feels undercooked compared to paid alternatives, with occasional bugs that can disrupt workflow.. The reliance on community support may lead to inconsistent user experiences, particularly if you encounter issues that are not widely addressed.. Some advanced features may not be as polished as those found in commercial tools, potentially leading to frustration for developers seeking seamless functionality.. Integrating with certain AI providers can be hit-or-miss, and I found that not all integrations worked smoothly, which may hinder productivity at times.. The learning curve for some of the more complex features can be steep, especially for beginners who might feel overwhelmed without a structured guide..

    Pricing & Availability

    Free

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