8 Web-based sandbox testing tools

Selecting the most suitable sandbox testing tools begins with a clear understanding of the available options and their features. To do so, as developers, you should consider compatibility, usability, and cost-effectiveness. That way, you can support your testing and deployment goals. That is why we created a list of 8 web-based sandbox testing tools to consider. Let's begin.

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What features should you consider in your sandbox testing tools?

When it comes to choosing the best sandbox testing tool, several key features are worth considering:

  • Flexibility: The ability to customize the sandbox environment to match your needs and requirements.
  • Scalability: The capability to handle large-scale testing scenarios with ease.
  • Security: Controls to ensure the sandbox and the test data are secure.
  • Analytics: The ability to measure and analyze the results of your tests in detail.
  • Collaboration: Tools that enable communication and cooperation among team members during testing.
  • Ease of use: An intuitive interface and simplified workflows that require minimal training and expertise.
  • Integration: The ability to integrate with other testing tools and systems to streamline the testing process.

8 Web-based sandbox testing tools

Here is the list of 8 best web-based sandbox testing tools based on our editor's choice.

1. CodePen – “The best place to build, test, and discover front-end code.”


CodePen is an online code editor and social development environment for front-end designers and developers. One of the key features of CodePen is its sandbox live testing client, which allows users to preview their code changes in real time immediately. Another useful feature of CodePen is its HTML sandbox, which enables users to create and test HTML code snippets and web pages in a safe and controlled environment. Additionally, CodePen also provides an IFrame sandbox testing option, which allows users to test website functionality and interaction without affecting the underlying architecture of the website.

Key features

Some features highlighted on the CodePen website include:

  • Collaboration tools: Easy collaboration on projects, with features like live commenting, project sharing, and the ability to clone and fork existing projects.
  • Preprocessor support: CodePen supports numerous preprocessor languages, including SASS, LESS, and Stylus. This feature offers developers flexibility to use the tools and libraries that fit their needs.
  • Embedded pens: CodePen allows users to embed Pen (code snippets and demos) on other websites, making sharing and showcasing work easy.
  • CodePen projects: It offers a feature-rich environment for developing web projects from start to finish. Users can easily manage files, include external resources like fonts and images, preview and debug their projects, and even publish their finished product directly from the CodePen interface.

2. JSFiddle – “Test your JavaScript, CSS, HTML, or CoffeeScript online”


JSFiddle is an online code editor and sharing tool for front-end developers. The platform provides a sandbox environment where developers can experiment with HTML, CSS, and JavaScript code snippets and view real time results.

JSFiddle is often used for prototyping, testing, and debugging code, and it offers a range of features that make this process easier and more efficient. The platform allows users to share code snippets via unique URLs, collaborate on code with others in real time, and save and archive their work for future use.

Key features

Some features highlighted on the JSFiddle website include:

  • Multiple file support: Enables multi-file handling from one application, enabling developers to organize their code and keep related resources together.
  • Frameworks and libraries: Provides access to popular frameworks and libraries, such as jQuery, Vue, and React, among others, enabling developers to experiment with new technologies and tools.
  • Version history: Automatically saves versions of user's code snippets, allowing developers to experiment freely without the risk of losing work.
  • Save and share: Offers developers the ability to save, use, share, and embed code snippets with just a few clicks.

3. Replit – “Idea to software, fast”


Replit is a browser-based integrated development environment (IDE) that allows developers to write, run, and collaborate on code in the cloud. The platform supports over 50 programming languages and provides a rich feature set for developers of all skill levels. Replit is popular among educators, students, and developers for its easy-to-use interface, engaging learning tools, and rich community resources. The platform includes a range of features, including real time collaboration, version control, and project management, that enable developers to streamline their workflow and focus on creating high-quality code.

Key features

Some features highlighted on the Replit website include:

  • Replit AI: Offers AI-powered coding assistance, including instant code completion suggestions, syntax highlighting, and intelligent error detection and correction.
  • Deployments: Enables users to easily deploy and share their projects with others, including on custom domains or services like GitHub.
  • Supported languages: Supports over 50 programming languages, including popular languages like Python, JavaScript, C++, TypeScript, and others.
  • Community resources: Offers a range of community resources, including forums, Q&A, and a directory of top projects, to help developers learn, collaborate, and explore.

4. JS Bin – “Collaborative JavaScript debugging”


JS Bin is an online web development environment that allows users to experiment with HTML, CSS, and JavaScript code snippets and view the results in real time. It is a popular tool for web developers who want to prototype ideas or test code quickly in the browser. JS Bin provides a live preview window showing the results of the user's code as they type. Additionally, JS Bin offers a range of features to support collaborative development, such as the ability to share code snippets with others, fork other users' code, and embed projects on other websites.

Key features

Some features highlighted on the JS Bin website include:

  • Code library: Provides a rich JavaScript library, which users can access to leverage pre-built code snippets and modules and speed up their development.
  • Multiple panels: JS Bin's web development environment allows users to work in various panels, making it possible, for example, to work on HTML, CSS, and JavaScript all at once with ease.
  • Mobile support: Allows users to test and debug code on mobile devices, offering native iOS and Android apps and browser-based tools for mobile web development.
  • Keyboard shortcuts: It offers numerous keyboard shortcuts, which can increase users' productivity during development by reducing the time spent on repetitive clicks and actions.

5. StackBlitz – “Click. Create a Bug Report. Done.”


StackBlitz is a web-based IDE for building web applications. With its set of features, StackBlitz offers a platform for front-end developers to create, collaborate, and deploy project code in the cloud. One of the standout features of StackBlitz is its sandbox environment, which enables developers to experiment with and build new code in a secure and controlled environment. The platform also offers an Angular Sandbox, a JavaScript Sandbox, and other sandbox options for testing and prototyping, depending on the developer's needs.

Key features

Some features highlighted on the StackBlitz website include:

  • Framework support: Supports a range of popular frameworks, including React, Vue.js, and Angular, among others.
  • Collaboration tools: These tools provide real-time collaboration features, including live pair programming and project sharing, to support team-based development.
  • Advanced features: This package includes various advanced features, such as CodeSandbox integration, version control, and deployment options, to streamline the development and deployment process.
  • Intuitive interface: Provides helpful code completion and debugging features designed to make development easier and faster.

6. CodeSandbox – “Instant cloud development”


CodeSandbox is an online platform that provides developers with a browser-based development environment for building applications. It allows developers to write, edit, and preview their code in real-time without local setups or installations. With CodeSandbox, developers can create and share projects using popular programming languages and frameworks, such as React, Vue, Angular, and Node.js.

Key features

Some features highlighted on the CodeSandbox website include:

  • Supported languages: Supports many popular programming languages and frameworks, including React, Vue, Angular, and Node.js.
  • Live collaboration: This feature facilitates live collaboration by allowing multiple developers to work together on the same project in real time.
  • Version control: With Git integration, developers can track their code changes and save and commit changes to their projects.
  • Pre-built templates and components: Provides access to a marketplace that offers pre-built templates, components, and libraries that can be integrated into projects.

7. Gitpod – “Always ready-to-code”


Gitpod is an online Integrated Development Environment that allows developers to quickly and efficiently build, test, and deploy their code in the cloud environment. With its automatic sandbox environment creation feature for every pull request, Gitpod ensures that the code has undergone thorough testing before being deployed to production.

Key features

Some features highlighted on the Gitpod website include:

  • Collaboration: Users can collaborate on real-time projects with built-in pair programming support.
  • Fully-configured workspaces: Provides configured workspaces that include pre-installed development tools and services. Developers can customize workspace configurations to meet project-specific requirements.
  • Version control integration: Integrates with Git-based version control systems such as GitLab, GitHub, and Bitbucket, making it easier for developers to manage code versions.
  • Live preview and debugging: This tool provides a real-time preview and debugging environment that enables developers to test and debug their applications without leaving their workspace.

8. Codeanywhere – “Codeanywhere is a Cloud IDE.”


Codeanywhere is a cloud-based Integrated IDE that allows developers to write, edit, and deploy code from anywhere using a browser. The platform supports various programming languages and popular development stacks like LAMP and MEAN. It offers features such as FTP support, terminal access, and project sharing, which help developers streamline their workflow. Additionally, Codeanywhere provides a "DevBoxes" feature, which can be considered a sandbox environment suitable for testing code.

Key features

Some features highlighted on the Codeanywhere website include:

  • Collaboration: Offers collaboration features like live pair programming and terminal sharing, enabling developers to work together when building software.
  • Git-based version control integration: Integrates with Git-based version control systems, making it easy for developers to manage their code versions.
  • DevBoxes: Developers can create isolated Linux environments with root access, known as DevBoxes, with customization options to fit their testing needs.
  • Built-in terminal access: A built-in terminal allows developers to execute commands, edit files, and perform tasks directly from the IDE without switching applications.

Which sandbox testing tool to choose?

Selecting the right sandbox testing tool for web developers can be complex. First, evaluate features, cost, and usability while checking compatibility with the existing development stack. This careful assessment ensures a controlled environment for testing applications before deployment. Additionally, these factors will help developers find a sandbox testing tool that meets their needs and streamlines the testing process for a smoother deployment.

Should you also consider sandbox alternatives?

Considering alternatives to sandbox testing can be beneficial, especially when using a sandbox may not be practical or cost-effective. Explore options such as manual testing, crowdtesting, or a hybrid approach that can help you create a testing strategy for your specific requirements. Global App Testing offers various services to assist app developers and businesses, including:

  • Localization testing: Our global network of testers checks the functionality, usability, and linguistic accuracy across different regions and languages to resonate with diverse cultural backgrounds.
  • Performance testing: We evaluate applications under various conditions to uncover potential bottlenecks and ensure optimal performance.
  • Extensive real-device coverage: We test smartphones, tablets, and other devices across various operating systems and versions to detect compatibility issues and ensure a seamless, error-free payment experience.
  • Crowdsourced testing: Our worldwide community of professional testers conducts comprehensive testing across various devices, platforms, and locations to replicate real-world conditions.
  • Easy-to-use platform: The Global App Testing platform offers an intuitive testing interface with comprehensive bug reports, test case results, and in-depth qualitative insights and reports.
  • Regression testing: We perform in-depth tests to uphold app stability and reliability over time.

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