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Daytona vs tethered
Short answer: Pick Daytona if you want self-hosted sandbox environments; pick tethered if you want in-process network firewall for Python. Both are free and open source.
DaytonaSet up a development environment on any infrastructure, with a single command.
tetheredYour app's network firewall — in one function call.Which to pick
Pick Daytona if you want…
- Self-hosted sandbox environments
- Rapid dev environment provisioning
- Integrations with Python, TypeScript or Ruby (on Daytona's list, not tethered's)
Pick tethered if you want…
- In-process network firewall for Python
- Integrations with requests, httpx or aiohttp (on tethered's list, not Daytona's)
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
- Starting price
- Daytona:Free
- tethered:Free
- Free plan or trial
- Daytona:Free to use
- tethered:Free to use
- 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
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.
Daytona vs tethered FAQ
What is the difference between Daytona and tethered?+
Daytona: Sets up development environments, not runtime network restrictions.
Should I use Daytona or tethered?+
Pick Daytona if you want self-hosted sandbox environments, rapid dev environment provisioning or integrations with Python, TypeScript or Ruby (on Daytona's list, not tethered's). Pick tethered if you want in-process network firewall for Python or integrations with requests, httpx or aiohttp (on tethered's list, not Daytona's).
Is Daytona or tethered free?+
Yes, both are free and open source.
Is Daytona or tethered open source?+
Yes, both are open source: Daytona (daytonaio/daytona on GitHub) and tethered (shcherbak-ai/tethered on GitHub, MIT license).
Do Daytona and tethered integrate with the same tools?+
Their integration lists don't overlap: Daytona lists Python, TypeScript, Ruby, Go and 1 more; tethered lists requests, httpx, aiohttp, Django and 2 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.