Best Runtime Products in 2025

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications.

Key Node.js features:

Asynchronous and Event-Driven JavaScript Everywhere Large Community and NPM High Performance

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.

Key Flagsmith features:

Feature Flags Remote Config A/B/X Testing & Optimization Organization Management

Try for free Open Source freemium

Build and debug modern web and cloud applications, by Microsoft.

Key VS Code features:

Cross-platform Extensibility Integrated Git Performance

Open Source

Sinatra inspired web development framework for node.js -- insanely fast, flexible, and simple.

Key ExpressJS features:

Fast Setup Middleware Support Extensibility Performance

Open Source

A utility-first CSS framework for rapidly building custom user interfaces.

Key Tailwind CSS features:

Utility-First Approach Customization Consistent Design Responsive Design

Open Source

A secure runtime for JavaScript and TypeScript built with V8, Rust, and Tokio.

Key Deno features:

Security Built-in Tooling Modern JavaScript/TypeScript Simplified Module Management

Open Source

Bun is an all-in-one JavaScript runtime & toolkit designed for speed, complete with a bundler, test runner, and Node.js-compatible package manager.

Key Bun.sh features:

Speed Built-in Tools TypeScript Support Compatibility

Open Source

A small framework for server-rendered universal JavaScript apps.

Key Next.js features:

Server-Side Rendering (SSR) Static Site Generation (SSG) API Routes File-Based Routing

Open Source

Yarn is a package manager for your code.

Key Yarn features:

Speed Reliability Security Offline Mode

Open Source

A JavaScript library for building user interfaces.

Key React features:

Component-Based Architecture Virtual DOM Strong Community and Ecosystem JSX Syntax

Open Source

Vercel is the platform for frontend developers, providing the speed and reliability innovators need to create at the moment of inspiration.

Key Vercel features:

Easy Deployment Fast Performance Serverless Functions Integration with Next.js

Simple REST APIs for Java and Kotlin.

Key Javalin features:

Lightweight Simplicity Kotlin & Java Support WebSocket Support

Open Source

Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.

Key GitHub features:

collaboration integration version_control community

Open Source

From Wikipedia, the free encyclopedia.

Key vert.x features:

Performance Polyglot Modular Reactive Ecosystem

Open Source