Leaflet
leafletjs.comAdd interactive, mobile-friendly maps to a web page with a JavaScript library.
Add interactive, mobile-friendly maps to a web page with a JavaScript library.
Add small reactive interactions to HTML with directives such as x-data, @click, and x-show.
Write and run JavaScript end-to-end tests across local browsers and remote grids.
Call models from multiple inference providers through Hugging Face's shared SDK and API interface.
Write load-test scenarios as code and control the request rate sent to an application.
Add automated accessibility rule checks to an existing browser UI test flow.
Turn text definitions into editable diagrams for software design notes and documentation.
Capture application errors with context and correlate them with performance and deployment changes.
Preview colours and typography on a sample site, then export them.
Adjust CSS colours and calculate contrast with focused JavaScript functions.
Configure a standalone colour picker with swatches and opacity controls.
Model paint-like colour mixing in a JavaScript application.
Design-focused email with polls, click triggers and creator checkout
Browse named CSS colours beside their values and aliases.
Stroke icons drawn for small 16 px interface spaces.
A Windows editor for source and text files with configurable syntax highlighting and Perl- or JavaScript-style regular expressions.
Build component-based web interfaces with a compact library that shares a React-compatible API.
A browser editor for creating, sharing and remixing p5.js sketches without local setup.
Choose numbered shades whose separation indicates minimum contrast.
A cross-platform IDE with language-aware editing, refactoring, project wizards, and application tooling.
Build colour scales and preview their roles in interface layouts.
Tailwind interface components with documented interactive behavior
Build standards-based web components with reactive state, scoped styles, and declarative templates.
Format source files with a consistent, opinionated printer that supports common web and configuration languages.