Open-source, self-hosted AI app builder — an agent builds real apps in isolated sandboxes on your own server, each live at a preview URL. Self-host in one command. MIT.
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Updated
Aug 12, 2026 - Go
Open-source, self-hosted AI app builder — an agent builds real apps in isolated sandboxes on your own server, each live at a preview URL. Self-host in one command. MIT.
Isolated databases for every AI agent branch. Build, test, and migrate in parallel. Production stays untouched.
Open-source CLI and agent skills for Prevu — preview/staging environments for coding agents like Claude Code, Codex, Cursor, OpenHands, even OpenClaw and Hermes Agent
Open-source full-stack preview environments with databases for every PR. The self-hosted alternative to Vercel/Qovery.
Kubernetes-native health checker that automatically finds and verifies your latest pods are ready before considering deployments successful - perfect for preview environments
Kubernetes-native issue workspace for coding agents, with local sessions, review evidence, and issue-scoped test environments.
A Go utility for automatically posting and updating deployment preview comments on GitHub pull requests.
Deterministic security smoke tests for preview, staging, and pre-deploy web URLs.
Per-pull-request ephemeral test environments on Kubernetes: isolated namespace, API suite sharded across parallel Indexed Jobs, aggregated Allure report, and a teardown the pipeline proves.
Deploy static site previews via ssh.
Open-source control plane for ephemeral preview environments
Self-hosted preview deployment control plane for isolated, secure application environments.
Temporary links and preview environments for any server stack, built for users and automation agents.
One governed TypeScript layer for cloud runtimes: sandboxes, jobs, services, edge deploys, database branches, previews, and machines. Capability negotiation, policy checks, and execution receipts across 15 provider adapters.
Preview environments for teams who won't run Kubernetes. Open a PR, get a full stack with a live URL; close it, it's gone.
Every open pull request gets its own live Kubernetes environment. Reconciled continuously against GitHub — no webhooks, no cleanup code.
Build, push, and deploy your app to FluxNow — or promote staging to production
Trainyard spins up a full preview environment for every pull request, tears it down when the PR closes, and runs entirely on infrastructure you own.
One preview environment per branch: builds the Dockerfile, picks a free port, and serves them all at name.localhost.
Per-PR ephemeral preview deploys via GitHub Actions + Pages: every PR gets its own live URL + bot comment, torn down on close. No external service.
Add a description, image, and links to the preview-environments topic page so that developers can more easily learn about it.
To associate your repository with the preview-environments topic, visit your repo's landing page and select "manage topics."