Software for HTML
GDevelop
GDevelop is a 2D cross-platform, free and open-source game engine that takes visual programming to the next level. GDevelop allows you to take read-made behaviours and add them to your game objects or create new once with intuitive and east to use events. With GDevelop, it is easy to make games for PC and Mobile, as well as launch HTML5 games playable right in your web browser.
form.taxi
If you have a static website with forms on it, form.taxi is the backend service for your HTML form to handle submissions in a simple and efficient way. Just connect your web form to the form.taxi endpoint, and it will take care of storage, spam filtering, and email notification. Use it with basic features for free.
Webix
With Webix you can create rich user interfaces and frontend applications using JavaScript, HTML and CSS. It's a web-based UI design tool for developing complex and dynamic, cross-platform web applications. Webix allows you to design better user experiences, using drag and drop functionality and utilizing over 100 pre-built UI components and widgets.
new.css
new.css is a classless CSS framework to write modern websites using only HTML. The framework weighs in at jut under 5kb making it an extremely performant.
Bootstrap
A free and open-source HTML and CSS framework dedicated to responsive and mobile-first frontend web development. With Bootstrap developers can get up and running fast without writing boilerplate HTML and CSS. Bootstrap comes packed with design templates and standards for buttons, forms, navigation, typography and interface components. The framework also provides extra interactive JavaScript extensions written specifically for Bootstrap.
Cirrus.CSS
Cirrus.CSS is a component and utility centric SCSS framework designed for rapid prototyping of web sites and web applications. In total, Cirrus.CSS weighs in at 17.3kb GZIPPED and provides all the necessary components for creating forms, buttons, check boxes, inputs and layouts for mobile and desktop.
PureCSS
PureCSS is a free and open-source CSS framework with a minimal footprint. The entire framework and its modules weighs in at just 3.7KB minified and gzipped. With PureCSS web developers can craft responsive UI for websites that works for mobile as well as desktop. Since every line of the framework was carefully considered, you can rest assured that your page size will be kept to a minimal, and your website loads fast.
Materialize CSS
A modern responsive front-end framework based on Material Design. With Materialize CSS you can speedup your design and development process as most of the heavy lifting is done for you with default stylings that incorporate custom components. All principles of Material Design is incorporated into the framework and can be easily utilized with components and animations that provide better feedback to the users of your websites and applications.
Semantic UI
Semantic UI is a free and open-source framework for HTML and CSS. The framework treats words and classes as exchangeable concepts. Classes use syntax from natural languages like noun/modifier relationships, word order, and plurality to link concepts intuitively. Semantic UI provides similar benefits to that of BEM or SMACSS style guidelines.
OpenUserCSS
With OpenUserCSS you can change the look of other websites. OpenUserCSS contains a wide range of themes that are easy to apply, to make websites more readable.