Cost / License
- Free
- Open Source
Platforms
- Linux
- Online
- Self-Hosted








Pusher is a hosted API for quickly, easily and securely adding scalable realtime functionality to web and mobile apps.

Build rich, interactive web applications quickly, with less code and fewer moving parts. Join our growing community of developers using Phoenix to craft APIs, HTML5 apps and more, for fun or at scale.

Microsoft SharePoint Designer (SPD) is a specialized HTML editor and web design freeware for creating or modifying Microsoft SharePoint sites and web pages. It is a part of Microsoft SharePoint family of products and formerly a part of...

Prototype is a JavaScript Framework that aims to ease development of dynamic web applications. Prototype provides various functions for developing JavaScript applications. The features range from programming shortcuts to major functions for dealing with XMLHttpRequest.
Annotate web pages and e-learning courses with real-time bug tracking and visual feedback, fostering collaboration and task management in development teams.




The flexible and powerful WebPlus from Serif makes designing and uploading professional-quality websites simple and easy – and you dont need to know HTML because it handles all the code writing behind the scenes!




Put yourself in the shoes of a hacker! Without technical expertise, launch an audit to detect security flaws on your website or web application. Online website vulnerability scanner. No installation required. ISO & RGPD compliant. How to avoid hackers?

Tab Auto Refresh is a multi-browser addon that helps you automatically reload tabs of your choice. In order to operate with this addon, please open toolbar popup UI while you are visiting a website. Adjust time interval in seconds (i.e. 120 sec) and you are all set.


Responsable is a responsive HTML CSS LESS SCSS framework with clean markup, normalized CSS, and responsive images. It allows for nested columns for easy grid nesting and customization, and provides base styles for forms, tables, and typography for faster startup on your projects.


WebRx is a Javascript MVVM-Framework built on ReactiveX for Javascript (RxJs) that combines Functional-Reactive-Programming with declarative Data-Binding, Templating and Client-Side Routing.
IETester is a free WebBrowser that allows you to have the rendering and javascript engines of IE11, IE10, IE9, IE8, IE7 IE 6 and IE5.5 on Windows 8 desktop, Windows 7, Vista and XP, as well as the installed IE in the same process.

A toolchain for building reusable, scalable Design Systems. Generate small, blazing fast, and 100% standards based Web Components that run in every browser.
Quick 'n Easy Web Builder is not an HTML editor, but an HTML generator! You can visually (WYSIWYG) create your websites by using drag & drop. Place objects (Text, Lines, Images, Shapes, Slideshows, Galleries, Forms etc) anywhere on the page (pixel perfect layouts).



Ultimate CSS Gradient Generator is a powerful way to create CSS gradients right from your browser. With built-in templates and support for accessing gradients using url parameters, it's easy to share and edit existing gradients.

BaseKit is the most widely deployed website editor distributed by hosting, telco and internet companies.




Emmet LiveStyle is a plugin for live bi-directional (editor <-> browser) CSS editing of new generation. Currently, it works in Google Chrome, Safari and Sublime Text, more browsers and editors will be available later.
Boost your SEO, speed and security: Checkbot for Chrome crawls your site to test you’re following over 50+ best practices. Test 1,000s of pages in minutes for broken links, duplicate content, invalid HTML, insecure forms, redirect chains and more.




Compass is an open-source SASS library - extending capabilities of SASS and provides cross-browser mixins for CSS properties introduced in CSS3.

The Goldilocks Approach to Responsive Web Design - A good starting point for design that takes device resolution out of the equation.