OpenSandbox

OpenSandbox is an open-source sandbox runtime that securely executes code and developer tools for AI agents.

OpenSandbox provides universal sandbox infrastructure for AI applications. It securely runs commands, code interpreters, browsers, and developer tools in isolated environments using Docker and Kubernetes runtimes. Users can manage sandbox lifecycles including provisioning, monitoring, pausing, resuming, and termination. The platform offers multi-language SDKs for Python, Java, Kotlin, JavaScript, TypeScript, C#, .NET, and Go. It is built for AI workloads such as coding agents, browser automation, remote development, and reinforcement learning scenarios.

OpenSandbox at a glance

Best for: Software engineer
Runs on: open source, self-hosted
Pricing: Free
Released: December 2025
Category: AI coding tool
Website: open-sandbox.ai

Key features

Docker and Kubernetes runtimes
Multi-language SDKs for Python, Java, Go, and more
Sandbox lifecycle management
Shell command execution and file management
Multi-language code interpreters
Browser automation with Chrome and Playwright
Port exposure and log streaming

Use it for

Run coding agents like Claude Code and Gemini CLI
Execute Chrome and Playwright browser automation
Host VS Code Web for secure cloud development
Run model-generated AI code safely

Companions

Tools that articles about OpenSandbox recommend using with it, each with its job.

Context7 — Provides up-to-date documentation for AI agents and code editors.
Ollama — Run local models at zero marginal cost, with code kept on your machine.
Composio — Equips AI agents with tools, managed user auth, and sandboxes across 1,500+ apps

Alternatives to OpenSandbox

OpenCode — Works with 75+ model providers, local models, and existing subscriptions
Agent Sandbox — Provides a secure and isolated execution layer for autonomous AI agents.
AIO Sandbox — Provides an integrated environment for agents in a single Docker container.
Open SWE — It uses isolated cloud sandboxes and curated toolsets for production engineering.
Daytona — It provisions sandboxes in under 90 milliseconds with full security isolation.
OpenChamber — Run and review multi-model AI coding agents from desktop, browser, and mobile devices.
OpenMonoAgent — Runs locally on your own hardware with no recurring subscription fees.
Open Agents Template — Spawn autonomous coding agents with full sandboxes and durable workflows.
OpenClaude — Connects one terminal interface to over 200 different AI models.
Sandcastle — Orchestrates AI coding agents in isolated Docker, Podman, or Vercel sandboxes.
Oh My OpenAgent — Executes complex coding and research tasks independently using a keyword.
Freebuff — Access multiple coding AI models for free without subscriptions.

All OpenSandbox alternatives