JavaScript Libraries and Tools Page 5 of 14

A peer-to-peer log store.

Flagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features.

We're Open Source.

Nunjucks is a templating engine developed by Mozilla that is primarily used for dynamically generating HTML markup in web applications. It is written in JavaScript and designed to be highly flexible and extensible.

Create regexps with clean, readable, functional & chainable syntax with help of in-editor autocompletion from TypeScript! Built better regexps faster!

JSX is a statically-typed, object-oriented programming language designed to run on browsers.

Emoji Mart is a Slack-like customizable emoji picker component for React.

A graph visualization library using web workers and jQuery.

iWantHue allows you to generate palettes of colors. It is about mastering the properties of a palette by setting a range of Hue, Chroma (unbiased saturation) and Lightness. You can generate palettes of any size or just get the generator for a javascript project.

Build forms in React, without the tears.

A-Painter lets you paint in VR in your browser. A WebVR-enabled browser is required. For controls, the experimental Chromium build on Windows supports HTC Vive controllers. You will need to enable Gamepad Extensions in about:config.

MicroPython aims to implement the Python 3.4 standard (with selected features from later versions) with respect to language syntax, and most of the features of MicroPython are identical to those described by the “Language Reference” documentation at docs.python.org.

Self-hosted, Node.js based analytics tool for those who care about privacy. Ackee runs on your own server, analyses the traffic of your websites and provides useful statistics in a minimal interface.

Cucumber is a tool that executes plain-text functional descriptions as automated tests. Collaboration tool for executable specifications which is based on "gherkin"-parser Gherkin is the language that Cucumber understand.

CodeceptJS is a modern end to end testing framework with a special BDD-style syntax. The tests are written as a linear scenario of the user's action on a site.

melonJS is an open source HTML5 game engine that empowers developers and designers to focus on content.

Terminal-based AI coding tool that can use any model that supports the OpenAI-style API.

SockJS is a browser JavaScript library that provides a WebSocket-like object. SockJS gives you a coherent, cross-browser, Js API which creates a low latency, full duplex, cross-domain communication channel between the browser and the web server.

LittleJS is a fast lightweight open source HTML5 game engine for modern web development. Its small footprint is packed with a comprehensive feature set including hybrid rendering, physics, particles, sound effects, music, and input handling.

SolidStart integrates multiple separate packages to provide a complete functionality. Each of these pieces can be replaced with your own implementation.

A suite of simple, single task, browser based, text manipulation tools. Most or all tools are client-side and do not store data on the web server.

The Famous Engine is a free and open source JavaScript rendering engine. What makes the Famous Engine unique is its JavaScript rendering engine and 3D physics engine that gives developers the power and tools to build native quality apps and animations using pure JavaScript.

Upload simplifies file uploading for websites and apps.

talkatv is an open source comment service much like Disqus or IntenseDebate .

mclist.io is a list of multiplayer servers for Minecraft Java Edition - a website that allows you to easily find a perfect Minecraft server to play.

Catalog is a tool for creating living style guides for digital products. It combines design documentation and assets with real, live components in one single place.