Developers like to write code for web applications with web based online tools. However such web-based code editors perform bit slow while comparing with desktop tools and applications. But nowadays such applications are focusing on providing a similar or better experience with desktop based ones.

If you are a developer and you seeking for some useful online code editors then you are at right place, I have gathered 20 online code editors and tools that would help you out with your development tasks. Following online code editors let you write your ideas into code easily in various languages ( php, html, javascript, css, Ajax etc.) and help you to simplify your development tasks quickly. I hope you will find the list handy and according to your requirements. Enjoy!



If you like the article you might be interested in our other article on JavaScript Code Editors and IDE for Developers.

1. BluePen Editor



BluePen Editor is a PHP-powered CSS editor that can be installed to any static or dynamic website and makes live CSS editing possible. Once triggered (with a bookmarklet), it opens the editor widget and makes all HTML elements hoverable so that blupePen can locate the CSS rules of them (like Chrome Dev Tools).



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2. Dirty Markup



Dirty Markup is a free web-based application for cleaning up such code very easily. It has support for HTML(5), CSS and JavaScript by combining the powers of the popular HTML Tidy, CSS Tidy and JS Beautify.

The editor used is the simple + functional AceEditor and there are multiple options for each beautifier to get the best results.



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3. Rendra Online HTML5 Editor



Rendera is an online HTML5 editor which renders a realtime preview of your current work also transform your current work into CSS, Rendera supports HAML and SASS. Rendera makes learning HTML5 and CSS3 easy and it is built with CoffeeScript and Sinatra.



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4. Maqetta



Maqetta is an open source project that provides WYSIWYG visual authoring of HTML5 user interfaces. The Maqetta application itself is authored in HTML, and therefore runs in the browser without requiring additional plugins or downloads. Maqetta is available under a commercial-friendly open source license. You can download the source code and install it on your own server, customize the code to fit your needs and/or contribute improvements to the open source project.



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5. Amy Editor



Amy Editor is a collaborative text and source code editor for developers. It support JavaScript, Ruby, PHP, C#, Java, HTML, YAML, etc… programming languages. It has Syntax Highlighting, Smart indentation for each language, Code folding, Unlimited undo/redo, Customizable key shortcuts, etc… You can easily change the color themes of the editor easily.



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6. JS Bin



JS Bin is a webapp specifically designed to help JavaScript and CSS folk test snippets of code, within some context, and debug the code collaboratively.

JS Bin allows you to edit and test JavaScript and HTML. Once you’re happy you can save, and send the URL to a peer for review or help. They can then make further changes saving anew if required.



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7. CSSDesk



CSSDesk is an Online CSS Sandbox. It allows people to quickly test snippets of CSS code, and watch the result appear live. I had very high ambitions for the project. There are line numbers and syntax highlighting appear live in the text box as you type. One of the greatest things is that it allows users to share their code with others as well.



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8. Editpad



EditPad is simple and minimal. No syntax highlighting, no project management…Just a plain page to type your text without any distractions.



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9. RegExr



RegExr is an online tool for editing and testing Regular Expressions (RegExp / RegEx). It provides a simple interface to enter RegEx expressions, and visualize matches in real-time editable source text. It also provides a handy RegExp snippet sidebar with descriptions and usage examples to make it easier to learn Regular Expressions through trial and error.



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10. Codeanywhere



Codeanywhere is a code editor in a browser with an integrated ftp client, and all popular web formats are supported (HTML, PHP, JavaScript, CSS, and XML).



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11. 9ne



9ne (Pronounced Nine) is a nice online text editor, based on the well known GNU Emacs. 9ne provides most of the basic Emacs functionalities and currently supports XML and Javascript syntax highlighting modes.



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12. Drawter



Drawter is a tool written in JavaScript and based on jQuery library. It provides you the possibility to literally draw your website’s code. It runs on every single web-browser which makes it really useful and helpful. Each tag is presented as a layer you have drawn.



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13. Shift Edit



Shift Edit provides code completion, syntax highlighting, live editing, revision history and many more.



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14. Darkcopy



DarkCopy is a simple, full-screen text editor for distraction free writing. DarkCopy is for anyone who enjoys the simplicity of a typewriter, and wants to increase productivity by focusing only on writing.



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15. jsFiddle



jsFiddle is a shell editor that eases writing JavaScript code by creating a custom environment based on popular JS frameworks. You can select the framework & the version of your choice (MooTools, jQuery, Dojo, Prototype, YUI, Glow,Vanilla). Also, if there is, you can add a complimentary framework like jQuery UI or MooTools More A great feature is the ability to save & share the code created with a unique URL generated. Optionally, jsFiddle has an embedding feature too. It is an almost perfect platform for trying & sharing your JavaScript code without the need of a website.



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16. Cloud9IdE



Cloud9 IDE is an open source application that aims to provide a powerful and focused IDE for JavaScript developers. It is powered by the Ajax.org platform + makes use of HTML5, node.js, socket.io and many other projects. The application has a pretty fast text editor with bundled syntax highlighting support for JS, HTML, CSS and mixed modes. Cloud9 IDE has integrated debuggers for node.js and Google Chrome which can be started, paused and stopped from the IDE.



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17. Dabblet



Dabblet is an interactive playground for quickly testing snippets of CSS and HTML code. It uses -prefix-free, so that you won’t have to add any prefixes in your CSS code. You can save your work in Github gists, embed it in other websites and share it with others.



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18. JS Hint



JSHint is a community-driven tool to detect errors and potential problems in JavaScript code and to enforce your team’s coding conventions. It is very flexible so you can easily adjust it to your particular coding guidelines and the environment you expect your code to execute in. The goal is to help JavaScript developers write complex programs without worrying about typos and language gotchas.



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19. jsdo.it



jsdo.it is a coding community for front-end engineers such as web designers, mark-up engineers, and JavaScript engineers. This is an online editor where you can try running your codes as you write. You can save your codes online as well as show them to the public as your work. Don’t worry even if you are not confident in your skill! Arrange shared codes and learn cutting-edge techniques.



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20. Gist Box



Finally I am adding Gist Box which lets you easily organize code snippets. Your library is saved to the cloud for backup. Never worry about snippets getting lost in the shuffle. GistBox was built on standard HTML5 technologies. On the go or at the office, you’ll always have GistBox.



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