GitHub Codespaces alternatives
The 5 alternatives below are grouped by kind of sandbox, and each says what it does differently from GitHub Codespaces. Start from whatever made you look: missing GPUs, session limits, self-hosting, pricing or isolation.
Why teams look beyond GitHub Codespaces
A solid VM-isolated workspace for humans and their assistants on GitHub, but its lifecycle and API are not designed for autonomous agent fleets.
- 12-hour maximum session and human-oriented idle/retention policies rather than an agent lifecycle
- No snapshot, fork or pause-with-memory APIs; no GPU machine types
- Cannot run on your own cloud; organisations pay for every core-hour with no included quota
GitHub Codespaces alternatives, by kind
Hosted sandbox platforms
SDK-driven sandboxes you create, run code in and destroy through an API.
Daytona
Stateful sandboxes for AI-generated code — Linux containers, Linux and Windows VMs, macOS and GPU sandboxes — with snapshots, volumes and preview URLs.
- Containers or VMs
- BYOC
- GPU
- Pause/resume
How it differs: Long-lived, stateful agent workspaces that need many SDK languages, GPUs, or Windows and macOS sandboxes. The strongest choice for stateful coding-agent workspaces and breadth of sandbox types; note the shift away from open source.
Together Code Sandbox
Together AI’s microVM sandbox service, built on the CodeSandbox acquisition, with snapshot-based starts, hibernation, cloning and preview URLs.
- MicroVM
- Pause/resume
How it differs: AI app builders and coding products that need hibernatable, forkable dev-environment VMs with preview URLs. Battle-tested microVM dev environments, now best suited to teams already working with Together AI.
Compute platforms with sandboxes
General serverless or app platforms that also offer sandboxes, often with GPUs.
Control Plane Sandboxes
Persistent, suspendable development sandboxes for coding agents inside a Control Plane "virtual cloud", with a browser IDE, SSH/VS Code/Cursor access and identity-based access to private services.
- Container (runtime not named)
- Self-hostable
- BYOC
- Pause/resume
How it differs: Enterprises on Control Plane that want long-lived agent dev environments with identity-based access to their private infrastructure. A persistent dev-environment style sandbox for enterprises standardised on Control Plane, not a general-purpose SDK sandbox.
Cloud development environments
Cloud and in-browser development environments that coding agents increasingly run in.
Coder
Self-hosted cloud development environments defined in Terraform (VMs, Kubernetes pods or Docker containers) for developers and coding agents, with a control-plane-hosted agent loop so workspaces hold no model credentials.
- Template-defined (VM/pod/container)
- Open source
- Self-hostable
- Pause/resume
How it differs: Organisations that want to run coding agents in self-hosted workspaces on their own clusters and clouds with audit and governance. The leading open-source, self-hosted workspace platform for agents and developers, with isolation as strong as the Terraform templates you write.
Ona (formerly Gitpod)
Enterprise cloud development environments provisioned as isolated VMs (EC2 or Compute Engine) in your own VPC from a Dev Container config, with SDKs, a CLI and Codex-based background agents; hosted Ona Cloud was retired on 31 October 2026.
- Dedicated cloud VM
- BYOC
- GPU
- Pause/resume
How it differs: Enterprises that want VM-isolated, Dev Container-based environments for developers and background agents inside their own AWS or GCP VPC. A mature, VPC-native VM environment platform for enterprises, now enterprise-only and tied to OpenAI's Codex after the Ona Cloud shutdown.
GitHub Codespaces vs alternatives
| Sandbox | Isolation | Open source | Self-host / BYOC | Cold start (vendor) | Max session | Snapshots / pause | GPU | SDKs |
|---|---|---|---|---|---|---|---|---|
| GitHub Codespaces | Dedicated VM per codespace | No | No / No | Not documented | 12 h, 30 min idle | No / Yes | No | CLI, REST API |
| Coder | Template-defined (VM/pod/container) | Yes | Yes / No | Not documented | Not documented | Not documented / Yes | Not documented | CLI, REST API, MCP server |
| Control Plane Sandboxes | Container (runtime not named) | No | Yes / Yes | 60-90 s | Not documented | Not documented / Yes | Not documented | CLI |
| Daytona | Containers or VMs | No | Not documented / Yes | <90 ms | Unlimited | Yes / Yes | Yes | Python, TypeScript, Ruby, Go, Java |
| Ona (formerly Gitpod) | Dedicated cloud VM | No | No / Yes | Not documented | Not documented | Not documented / Yes | Yes | Python, JavaScript/TypeScript, Go, CLI, REST API |
| Together Code Sandbox | MicroVM | No | No / Not documented | 0.5 s (snapshot) | Until terminated | Yes / Yes | Not documented | Python, TypeScript |
Frequently asked questions
What are the main alternatives to GitHub Codespaces?
Is there an open-source alternative to GitHub Codespaces?
Cite this page
Agent Sandboxes. (2026). GitHub Codespaces alternatives. agentsandboxes.org. Last reviewed November 9, 2026. https://agentsandboxes.org/alternatives/github-codespaces/
Found an error or a missing sandbox? Submit a correction — every entry links to the sources it relies on.