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ASReview
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ASReview

Open-source active learning tool for systematic review screening

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About ASReview

ASReview is an open-source active learning tool that aims to make the tedious process of systematic review screening a bit more bearable. If you've ever found yourself wading through mountains of academic papers, desperately searching for that needle in a haystack, you'll understand the pain this tool is trying to alleviate. By leveraging machine learning, ASReview prioritises articles for you based on previous screening decisions, which can be a real time-saver when you're drowning in literature. With the ability to customise your screening criteria, it becomes a more tailored experience, allowing you to focus on what really matters in your research.

One of the standout features of ASReview is its user interface; it’s surprisingly intuitive for a tool that’s fundamentally designed for researchers who thrive on data. You can easily upload your initial dataset, and the tool will start suggesting articles based on your past choices. The more you use it, the more it learns, which means that ideally, your screening process becomes more accurate over time. However, it’s worth noting that the learning curve can be a bit steep for newcomers, especially if you’re not familiar with machine learning concepts. But once you get the hang of it, the potential for increased efficiency is impressive.

Now, let’s talk about the good old pricing reality check: it’s free! Yes, you heard that right. The fact that ASReview is open-source means that not only do you get access to this nifty tool without spending a penny, but you also have the added bonus of transparency in its algorithms. However, being free also means that you might not have the kind of dedicated customer support you might find with premium tools, which can be a downside if you run into trouble. That said, the community around open-source tools can often be very helpful.

ASReview is fantastic for systematic reviewers, meta-analysts, or anyone involved in literature assessments. However, it's not for everyone. If you're looking for a quick fix and aren't willing to invest some time in learning the tool, or if your research doesn't involve large-scale literature reviews, you might find this tool a bit overwhelming. But for those committed to rigorous research, ASReview is a valuable asset worth considering.

Our Review

Verified 11 May 2026

Reviewed by Delv Editorial, Delv Team

When I first stumbled upon ASReview, I was both intrigued and sceptical. I mean, a free tool that claims to simplify the painstaking process of systematic review screening? It felt too good to be true. But after giving it a go, I can honestly say it delivered on its promises, at least most of them. The user-friendly interface was a pleasant surprise; I was expecting a clunky experience typical of many open-source tools, but ASReview managed to be surprisingly intuitive.

What I found particularly impressive was the active learning feature. The tool learns from your previous screenings, which means that as you continue to use it, it gets better at suggesting relevant articles. I tested it on a project where I had to review over a thousand papers, and I was amazed at how much time it saved me. Instead of scrolling through endless abstracts, I could focus on the articles that mattered most.

However, let's not pretend it's all sunshine and rainbows. The learning curve can be quite steep, especially if you're not familiar with machine learning concepts. There were moments I felt a bit lost, like when I was trying to tweak my screening criteria for the first time. Additionally, because it’s open-source, you don’t have a dedicated support team to turn to when things go awry. I had to rely on community forums, which can be hit or miss when you’re in a pinch.

In comparison to alternatives like Covidence or Rayyan, ASReview is a different beast. While those tools might offer a more polished experience with stellar customer support, they come with a price tag. ASReview, being free, is a fantastic option for individual researchers or smaller institutions that might not have the budget for premium options. However, if you need a tool that’s straightforward and requires minimal setup, you might find those alternatives more appealing.

In the end, ASReview is perfect for dedicated researchers who are willing to invest time into mastering it. If you regularly conduct systematic reviews or are part of a research team that needs to manage a large volume of literature, this tool is a no-brainer. Just be prepared to grapple with a few complexities along the way. All in all, ASReview has made my literature review process much more manageable, and I can see it becoming an essential part of my academic toolkit.

Getting started with ASReview

In this guide, you'll learn how to set up ASReview and start screening academic papers efficiently. By the end, you'll be able to prioritise articles based on previous decisions, significantly reducing the time spent on systematic reviews.

Step 1: Sign up and set up

  • Go to the [ASReview website](https://asreview.nl).
  • Click on the **"Get Started"** button at the top right corner.
  • You will be directed to the app interface. No sign-up is required; you can start using the tool immediately for free.
  • Step 2: Your first review

  • Click on **"New Project"** to create a new systematic review project.
  • Enter your project name and a brief description, then click **"Create"**.
  • Upload your dataset of articles (usually in CSV format) by clicking on the **"Upload"** button.
  • After the upload, select the **"Active Learning"** option to begin the screening process.
  • ASReview will show you papers one by one. You can classify each paper as **"Include"**, **"Exclude"**, or **"Maybe"** using the buttons at the bottom of the screen.
  • As you make decisions, the tool will learn and prioritise the next papers accordingly.
  • Step 3: Get better results

  • Use the **"Settings"** menu to adjust the active learning parameters. For example, you can change the number of articles shown per iteration or set thresholds for inclusion.
  • Regularly check the **"Review Statistics"** panel to monitor your screening progress and the model's performance.
  • Export your results by clicking on the **"Export"** button to save your final list of included articles for documentation.
  • Pro tip

    To save time, use the "Skip" button for papers that are clearly irrelevant. This helps the model learn faster and reduces the number of iterations needed.

    Common mistake to avoid

    Avoid uploading datasets with inconsistent formatting or missing data fields. Ensure your CSV is clean and follows the expected structure to prevent errors during the upload process.

    The Verdict

    ASReview is a solid recommendation for researchers who are serious about systematic reviews and have the time to learn a new tool. Its free, open-source nature makes it an excellent choice for those on a budget, but if you're after something straightforward and easy to use, you might want to explore alternatives like Covidence.

    Best For

    • Academic researchers conducting systematic reviews
    • PhD students overwhelmed by literature reviews
    • Meta-analysts looking for efficiency in literature screening
    • Research teams collaborating on large projects
    • Librarians supporting researchers in literature assessments

    At a Glance

    ASReview is a free, open-source tool that uses active learning techniques to simplify the systematic review screening process. It intelligently prioritises relevant articles, significantly improving efficiency for researchers dealing with large volumes of literature.

    Strengths

    • +The tool is completely free, making it accessible for individual researchers and institutions without hefty budgets.
    • +ASReview offers an intuitive interface that allows users to easily upload datasets and start screening without a steep technical barrier.
    • +The active learning feature is genuinely impressive, as it learns from your previous decisions to improve its article suggestions over time.
    • +Customisation options are plentiful, so you can tailor your screening criteria to fit the specific needs of your research project.
    • +Being open-source means the algorithms are transparent, which fosters trust and collaboration within the academic community.
    • +The community support around ASReview can be quite helpful, with many users sharing tips and best practices online.

    Limitations

    • -The learning curve can be steep for newcomers, particularly those unfamiliar with machine learning, which might discourage some users.
    • -As an open-source tool, the lack of dedicated customer service can be a hassle if you encounter technical issues.
    • -The interface, while intuitive, might still feel overwhelming due to the sheer volume of options available.
    • -It may not be the best fit for researchers who only need to screen small sets of literature, as the tool's strengths shine in large-scale reviews.
    • -Updates and improvements depend on community contributions, so you might not see rapid advancements in features or bug fixes.

    Use Cases

    • -Academic researchers conducting systematic reviews who need to sift through hundreds of articles efficiently.
    • -Meta-analysts looking to streamline the literature assessment process without compromising on quality.
    • -PhD students who are overwhelmed by the amount of literature they need to review for their dissertations.
    • -Research teams collaborating on large projects that require a collective approach to screening and analysis.
    • -Librarians and information specialists tasked with helping researchers find relevant literature quickly.

    Alternatives

    Rayyan - a user-friendly tool for collaborative systematic reviews that offers a more straightforward interface for less tech-savvy users.
    Covidence - better suited for teams needing robust management features and a more polished user experience.
    EndNote - ideal for researchers who prefer comprehensive reference management alongside literature screening capabilities.
    Zotero - a great alternative for those who want an all-in-one solution for managing references and literature, albeit without the active learning features.

    Frequently Asked Questions

    ASReview is a free, open-source tool that uses active learning techniques to simplify the systematic review screening process. It intelligently prioritises relevant articles, significantly improving efficiency for researchers dealing with large volumes of literature.
    The key advantages of ASReview include: The tool is completely free, making it accessible for individual researchers and institutions without hefty budgets.. ASReview offers an intuitive interface that allows users to easily upload datasets and start screening without a steep technical barrier.. The active learning feature is genuinely impressive, as it learns from your previous decisions to improve its article suggestions over time.. Customisation options are plentiful, so you can tailor your screening criteria to fit the specific needs of your research project.. Being open-source means the algorithms are transparent, which fosters trust and collaboration within the academic community.. The community support around ASReview can be quite helpful, with many users sharing tips and best practices online..
    Some limitations of ASReview include: The learning curve can be steep for newcomers, particularly those unfamiliar with machine learning, which might discourage some users.. As an open-source tool, the lack of dedicated customer service can be a hassle if you encounter technical issues.. The interface, while intuitive, might still feel overwhelming due to the sheer volume of options available.. It may not be the best fit for researchers who only need to screen small sets of literature, as the tool's strengths shine in large-scale reviews.. Updates and improvements depend on community contributions, so you might not see rapid advancements in features or bug fixes..

    Pricing & Availability

    Free

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