11 Excellent Websites for Online Code Testing

In this tech-savvy era, developers and programmers do not require a physical server or Integrated Development Environment (IDE) anymore to experiment and execute programming codes. Thanks to the numerous web-based tools available, you can now test your codes without having to download and install any software. We have put together a list of 11 websites that provide the most exceptional code-testing tools to help you choose the best one for your coding endeavours. With these websites, you can effortlessly launch your coding project without accessing a physical computer.

It’s worth noting that an internet connection is mandatory for all of these tools.

  1. JS Bin

    JS Bin is a user-friendly JavaScript debugging tool, with its main highlight being the ability to collaborate with other developers.
    You can invite fellow developers to work with you in real-time by sending them a secure link. Although the user interface may seem overwhelming at first, you will find it more intuitive with repeated use.
  2. jsFiddle

    jsFiddle is a widely-used testing tool among developers and programmers across the globe, famous for its dynamic interface and ability to handle even complex functions that other web tools may struggle with. This makes it a popular choice for testing codes.
    Signing up for a free account on jsFiddle is straightforward, allowing you to begin coding without any complicated set up. Along with this, you can effortlessly share a short URL with your colleagues via popular social media outlets such as Twitter and Facebook, which can be accessed through the website.
  3. CSSDesk

    CSSDesk, much like other tools on our list, has a split-screen interface where the source code is shown on the left and the rendered result on the right. This software is an excellent choice for building basic web page prototypes and testing extensive CSS3 codes.
    You can easily save your source code to your computer for future reference or create a brief, shareable link that lets other developers collaborate on your code using the CSSDesk program. This provides an excellent platform for streamlining teamwork and making quick changes efficiently.
  4. WriteCodeOnline

    WriteCodeOnline is a fantastic web-based tool that provides a sleek and attractive user interface. With WriteCodeOnline, you can test code written in a wide range of languages, including JavaScript and PHP. The tool offers instant feedback by showing the output results right below the text box.
    Upon clicking the ‘execute code’ button, the tool parses and displays all inputs to the user. While the website may not be the most suitable option for larger data files, it is a perfect platform to experiment with fresh ideas.
  5. Tinkerbin

    Tinkerbin is a groundbreaking web application that enables users to experiment with HTML, JavaScript, CSS, CoffeeScript, Sass (with Compass), Less, HAML, and many other languages without the need to create or save files on a server. Its dashboard features an advanced level of sophistication, including features that are expected to become the standard in web design in the near future.
  6. IDEOne

    IDEone is a free, web-based compiler and debugger that enables users to compile and run code in over forty different programming languages, including Objective-C, Java, C#, VB.NET, and SQL. IDEone provides a convenient and efficient way to develop, test, and share code snippets. With its user-friendly interface, IDEone makes it simple to develop, debug, and execute code in various programming languages quickly and easily.
    You may also distribute your source code by hosting it on a separate URL. However, the website has plenty of advertisements and other content, making it challenging to navigate and use as intended. Despite this, IDEone is still an enjoyable website to use.
  7. Dabblet

    Dabblet is an interactive tool that simplifies the process of testing and experimenting with HTML and CSS code. It provides a prefix-free template, allowing users to avoid including extra prefixes in their code and saving them time and effort. With Dabblet, users can save their work in GitHub gists and share it with ease by embedding it in websites or by utilising the Dabblet platform.
  8. CodeSandBox

    CodeSandBox is an online code editor and prototyping tool that allows developers and designers to swiftly create and share web applications. It offers an extensive range of features for developing and testing JavaScript programs, including syntax highlighting, code completion, and debugging. CodeSandBox is an indispensable tool for developers, providing a robust and user-friendly environment for creating and debugging web applications.
    CodeSandBox is compatible with popular JavaScript libraries such as React.js, Vue.js, and Svelte, as well as Node.js. Users can take further advantage of web-based terminal access. CodeSandBox also provides the convenience of downloading NPM dependencies automatically.
  9. ESLint Demo

    ESLint is a remarkable tool for creating rules for code that can be employed in team projects. By utilising ESLint, you can ensure that your team is following the same standards and writing code in the same style, making it easier to collaborate on the project and guaranteeing a consistent, high-quality output.
    ESLint offers numerous options for governing your code styles, so selecting one may prove challenging, particularly if you are new to the tool.
  10. PHPStan

    PHPStan is a static analysis tool that detects potential errors and flaws in PHP code without the need to execute it. PHPStan alerts you when you attempt to pass a string value to a method that only accepts integers or try to access a property that does not exist on a particular class, for instance.
    Exploring the online editor on the PHPStan website can give you a better understanding of this powerful tool’s features and capabilities. You may be surprised to learn that many existing PHP codes can be corrected and improved to avoid potential issues.
  11. OneCompiler

    OneCompiler is a free online compiler that enables users to write, execute, and share code in over sixty programming languages, including Java, Python, MySQL, C, C++, NodeJS, Jshell, and HTML. This tool is perfect for swiftly testing code, whether for a demonstration or a quick test.

Final thoughts

Incorporating code-testing tools can prove extremely advantageous when working on projects, running code online, and collaborating with other developers. However, it is critical to remember that these tools should not be treated as the sole source of programming and testing. Rather, they should be used to assess the performance of code in real-time. By employing code-testing tools, developers can swiftly and precisely test the efficiency of their code before implementing it in the final product.

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