CodeSandbox alternatives: 3 free & open-source picks
Compare recorded free and open-source options, their capabilities and operating requirements. Source dates are shown below; licenses, hosted limits and project activity can change.
VS Code in a browser; the cloud part is your server.
licenseMIT
runsyour server
installOfficial install script, package, Docker image, or Helm chart on a Linux server
dataRepositories, terminals, extensions, and VS Code user data live on the host/server filesystem and mounted home directories
the catch vs CodeSandboxIt is only VS Code running on a server you operate, without CodeSandbox's instant disposable sandboxes, automatic previews, forks, share links, and managed collaboration.
setupRequires a server with roughly 1 GB RAM and two CPU cores, plus WebSocket-capable HTTPS/reverse-proxy and authentication configuration before exposing it publicly
facts verified 2026-08-10
Full cloud workspaces on your infrastructure; Terraform and PostgreSQL come along for the ride.
licenseAGPL-3.0+
runsyour server
installInstall the Coder control plane, connect PostgreSQL, then provision workspaces from Terraform templates; Helm is available for Kubernetes
enginesCoder's AI agent integrations support Anthropic, OpenAI, Google, Azure OpenAI, AWS Bedrock, OpenAI-compatible endpoints, OpenRouter, and Vercel AI Gateway
dataUsers' source and build artifacts live in the provisioned workspace disks, volumes, or cloud resources; Coder configuration, users, audit/control-plane state, and template/Terraform state live in PostgreSQL
the catch vs CodeSandboxCoder is an infrastructure platform for durable workspaces, not an instant public browser sandbox, so setup, templates, and cloud resources replace CodeSandbox's one-click experience.
setupThe first obstacle is infrastructure, not the IDE: PostgreSQL, Terraform templates, cloud or cluster credentials, persistent workspace storage, and a reachable TLS URL are required
facts verified 2026-08-10
A real browser IDE platform, assuming Kubernetes already counts as normal in your house.
licenseEPL-2.0
runsyour server
installInstall the Che Operator on an existing Kubernetes or OpenShift cluster
dataSource normally lives in Git and checked-out workspace containers; persistent workspace data uses Kubernetes persistent volumes, while devfiles and platform configuration live in the cluster
the catch vs CodeSandboxChe requires Kubernetes and substantial platform administration, and it cannot match CodeSandbox's quick shareable playgrounds, automatic previews, and low-friction onboarding.
setupA functioning Kubernetes/OpenShift cluster is a prerequisite, followed by operator, ingress, storage class, TLS, identity, quotas, and devfile administration
facts verified 2026-08-10
latest recorded source check 2026-08-10 · check current terms at the source
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| code-server | MIT | docker to self-host | web, linux, self-hosted | 78,643 | 2026-08 |
| Coder | AGPL-3.0+ | self-host, real ops | web, macos, windows, linux, self-hosted | 13,300 | 2026-08 |
| Eclipse Che | EPL-2.0 | self-host, real ops | web, self-hosted | 7,200 | 2026-08 |
They pay to avoid managing dev machines for experiments and previews. The recorded subscription totals $144 a year before any costs of an alternative.
Questions about these alternatives
Is there a free alternative to CodeSandbox?
Yes: code-server, Coder, Eclipse Che. These are recorded free or open-source options. Compare their feature limits, licenses, hosting costs and current availability before choosing.
Should I just build my own CodeSandbox?
Our verdict is KINDA. You can self-host a browser IDE, but fast templates, previews, cloud VMs, collaboration, and workflow integrations are the product. Review the scope, implementation prompt and trade-offs in the CodeSandbox build guide.
