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Daytona vs tethered
Sets up development environments, not runtime network restrictions.
DaytonaSet up a development environment on any infrastructure, with a single command.
tetheredYour app's network firewall — in one function call.Side by side
- What it is
- Daytona:Daytona is an open-source dev environment manager that creates secure, elastic sandboxes for code and AI agent execution.
- tethered:tethered is a zero-dependency Python library that enforces outbound network allow-lists at runtime.
- Best for
- Daytona:Self-hosted sandbox environments
- tethered:In-process network firewall for Python
- Who it’s for
- Daytona:Developers and teams needing isolated, reproducible environments for any infrastructure.
- tethered:Python developers who need runtime network egress control, including AI-generated code and third-party libraries.
- Pricing
- Daytona:Open source
- tethered:Open source
- Open source
- Daytona:Yes, 71,707 GitHub stars
- tethered:Yes, 10 GitHub stars
- Works with
- Daytona:Python, TypeScript, Ruby, Go, Java
- tethered:requests, httpx, aiohttp, Django, Flask, FastAPI
- DevHunt upvotes
- Daytona:339
- tethered:1
- Launched on DevHunt
- Daytona:May 2024
- tethered:Mar 2026
Daytona features
- Sandboxes. Isolated full composable computers that spin up in under 90 ms and retain state.
- Agent tools. Programmatic APIs and SDKs for code execution, filesystem ops, and lifecycle management.
- Human tools. Dashboard, web terminal, SSH and VNC access for interactive sessions.
- Platform controls. Governance, API keys, audit logs and OpenTelemetry for organizations.
- System tools. Hooks, webhooks and network limits for custom lifecycle events.
- Multi-language SDKs. Client libraries for Python, TypeScript, Ruby, Go and Java.
tethered features
- Process-wide activation. Call activate() once to set a global allow-list for all outbound sockets.
- Scoped tightening. Use scope() to apply tighter restrictions to specific code paths or libraries.
- Zero external dependencies. Implements checks by hooking Python's native socket layer, no extra packages needed.
- Works with common frameworks. Compatible with requests, httpx, aiohttp, Django, Flask, FastAPI, and any socket-based library.
- Subprocess propagation. Automatically propagates policies to child processes via site-packages bootstrap.
- Locked-mode integrity checks. Detects tampering of policy payloads and filesystem changes.
- DNS divergence repair. Falls back to safe DNS resolution when standard lookup fails.
- Simple API. One-line allow-list declaration blocks unauthorized network calls with EgressBlocked exceptions.
Based on each tool's website and DevHunt data. Details may change; check the official sites.