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What is StackBlitz WebContainers?

StackBlitz WebContainers provide a groundbreaking client-side runtime that runs Node.js, package managers, and full-stack frameworks directly inside the browser. They eliminate the need for remote development servers by using the user's local CPU and memory for compute, delivering unmatched performance, security, and scalability. Through the WebContainer API, developers can boot an isolated environment, mount project files, install dependencies, and execute dev scripts exactly as they would on a local machine. This capability enables highly interactive experiences like full-stack playgrounds, live documentation, onboarding workflows, educational sandboxes, and AI-native IDEs that operate entirely in-browser. WebContainers support all major frameworks, Wasm workloads, and modern browsers including Chromium, Firefox, and Safari Technology Preview. They provide native support for npm, pnpm, and yarn, enabling realistic, production-grade workflows in disposable environments. Because execution happens on-device, teams drastically reduce infrastructure costs while delivering fast, low-latency development experiences. The API is designed for reliability, making it easy to create branded, custom editors or integrate with existing apps. Leading companies and open-source maintainers rely on WebContainers for secure, interactive environments that accelerate shipping and improve developer experience. As the backbone of StackBlitz's own platform, WebContainers are continuously refined and production-proven, offering a future-ready foundation for web-based development tools.

What is Ona?

Ona, rebranded from Gitpod, represents a new era in cloud-based software development by combining intelligent automation with secure, enterprise-grade infrastructure. It offers sandboxed development environments that run with complete OS-level isolation, pre-configured for consistency and tailored for professional engineering. These environments can be hosted in Ona’s cloud or within an organization’s own infrastructure, giving teams flexibility and control over source code, secrets, and networks. Ona Agents act like virtual engineering teammates, capable of scoping projects, parallelizing work, writing and reviewing code, and even producing documentation, keeping momentum high across distributed teams. Developers can move effortlessly between conversations with agents, a browser-based VS Code Web interface, or local IDEs, ensuring fluid collaboration on any device. To safeguard operations, Ona Guardrails provide advanced permission management, organizational policies, detailed audit logs, and complete network control. Global enterprises, including major banks and pharmaceutical leaders, rely on Ona for its robust compliance and enterprise integrations. The platform connects seamlessly with popular tools like GitHub, GitLab, MongoDB, AWS, Copilot, Claude Code, and Amazon Bedrock, making it adaptable to diverse workflows. Backed by SOC 2 certification, GDPR adherence, and accessibility compliance, Ona meets strict regulatory and inclusivity standards. With over 2 million developers already on board, Ona is trusted worldwide as a platform to accelerate software engineering with confidence, security, and efficiency.

Media

Media

Integrations Supported

JavaScript
Node.js
TypeScript
Vue.js
Next.js
React

Integrations Supported

JavaScript
Node.js
TypeScript
Vue.js
Amazon Web Services (AWS)
C
Coder
GitHub Copilot
Go
GoLand
Java
PHP
PyCharm
Redis
Rider
Ruby
Scala
Sourcegraph

API Availability

API Availability

Pricing Information

Pricing not provided
Free Version

Pricing Information

$20/month
Free Version

Supported Platforms

SaaS
Chromebook

Supported Platforms

SaaS

Customer Service / Support

Web-Based Support

Customer Service / Support

Standard Support
Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

StackBlitz

Date Founded

2018

Company Location

United States

Company Website

webcontainers.io

Company Facts

Organization Name

Ona

Date Founded

2016

Company Location

Germany

Company Website

ona.com

Categories and Features

Code Editors

Not specified

IDE

Not specified

JSON Editors

Not specified

Categories and Features

Agentic AI

Not specified

AI Coding Agents

Not specified

AI Coding Assistants

Not specified

AI IDEs

Not specified

IDE

Not specified

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