All European SaaS

CodeSandbox is a browser-based code editor focused on building, sharing, and collaborating on React and JavaScript projects. It offers live preview, GitHub integration, real-time collaboration, and Node.js support without any local setup.

Codacy

Developer Tools

EU Based

Codacy automates code quality reviews on every commit and pull request, flagging issues around style, security, duplication, and complexity. It tracks coverage trends and helps teams tackle technical debt efficiently across languages like JavaScript, Java, Python, Ruby, and more.

Ckeditor

Developer Tools

EU Based

CKEditor offers two open-source JavaScript WYSIWYG rich text editors (v4 and v5) embeddable in any web browser. It supports real-time collaboration, track changes, comments, and integrates with React, Angular, Vue, and more.

Sculptgl

Developer Tools

EU Based

SculptGL is a browser-based 3D sculpting tool powered by JavaScript and WebGL. It offers multiresolution sculpting, dynamic topology, voxel remeshing, PBR vertex painting, and supports OBJ, PLY, and STL formats. Development has been discontinued in favor of Nomad Sculpt.

Alinea CMS is a modern, Git-based headless content management system built for developers. It offers a clean editing interface and stores content in flat files, integrating seamlessly with JavaScript frameworks.

JSFiddle is an online IDE and community platform for testing and sharing HTML, CSS, and JavaScript code snippets called fiddles. It supports libraries like jQuery and offers live preview, syntax highlighting, and real-time collaboration.

Microstudio

Developer Tools

EU Based

microStudio is a free, open-source online game engine for creating 2D games in the browser. It supports microScript, JavaScript, Python, and Lua, with built-in sprite and map editors, real-time collaboration, and one-click export to HTML5, Windows, Linux, and macOS.

miniPaint is a browser-based image editor built with HTML5 and JavaScript. It lets users edit photos, draw, apply effects, and work with layers directly online without any installation. An Electron desktop version is also available.

Openspeedtest

Infrastructure & Cloud

EU Based

OpenSpeedTest is a free, open-source bandwidth testing tool that measures download and upload speeds on any device. Built with HTML5 and JavaScript, it supports connections from 1 Kbps to 1 Gbps+ and can be self-hosted via Docker or installed natively.

LibreSpeed is a lightweight, self-hosted internet speed test built with JavaScript. It measures download, upload, ping, and jitter without requiring Flash or Java. Fully open source, privacy-focused, and supports multiple servers, Docker, and mobile devices.

Playcanvas

Developer Tools

EU Mentions

PlayCanvas is an open-source WebGL game engine designed for building browser-based 3D and 2D games. It offers a cloud-based visual editor, real-time collaboration, and supports multiplayer and single-player experiences.

Construct 3

Developer Tools

EU Mentions

Construct 3 is a browser-based 2D game engine that uses a visual event-driven system, requiring no prior coding knowledge. It supports JavaScript for advanced users and allows exporting games to HTML5, mobile platforms, and Xbox One.

Js Bin

Developer Tools

EU Mentions

JS Bin is an open source collaborative tool for writing and testing HTML, CSS, and JavaScript in the browser. Code is entered in split panes with live output preview, shareable via short URLs, with support for popular JS libraries.

Kotlin

Developer Tools

EU Mentions

Kotlin is a modern, statically typed programming language developed by JetBrains that runs on the JVM and can be compiled to JavaScript or native code. It is fully interoperable with Java and is officially supported for Android development.

W3Schools

Developer Tools

EU Mentions

W3Schools is an online learning platform for web development, offering tutorials and references on HTML, CSS, JavaScript, and other web technologies. It provides interactive examples and exercises for beginners and experienced developers alike.