./comparisons
Bunnyshell vs Fly.io.
Environments as a Service — preview, production, AI sandboxes, remote dev, and more. All pay-per-minute with unlimited users. Fly.io is a global app hosting platform with hardware-virtualized containers and usage-based compute pricing.
Used by engineering teams at
Feature-by-Feature
How the two platforms compare across the dimensions that matter most.
Bunnyshell is a full Environments as a Service platform — preview, production, AI sandboxes, remote dev, DORA metrics, and pay-per-minute pricing on your own cloud. Fly.io is a global app hosting platform with hardware-virtualized Fly Machines, managed Postgres, GPU support, and usage-based infrastructure pricing. Bunnyshell wins on environment management, preview envs, multi-stack support (Compose, Helm, K8s, Terraform), remote dev, BYOC, and Git ChatOps. Fly.io wins on managed databases, GPU access, and global edge deployment.
| Bunnyshell | Fly.io | |
|---|---|---|
| Ephemeral preview envs | Full-stack clone per PR, auto-create/destroy | No native preview environments |
| Production environments | Yes — autoscaling, multi-region, zero-downtime | Yes — global deployment across 30+ regions |
| AI Sandboxes | Yes — Firecracker isolation, ~100ms start, SDK | Sprites — hardware-isolated sandboxes for AI code |
| MCP Server | Yes — manage envs from Claude, Cursor, Windsurf | No |
| AI IDE Workspaces | Yes — Cursor, Windsurf, Copilot, JetBrains | No |
| Remote dev environments | Yes — IDE sync, debugging, port forwarding | No |
| Stack support | Compose, Helm, K8s, Terraform | Docker, Fly Kubernetes (no Helm, Terraform, Compose) |
| Environment as Code | Single bunnyshell.yaml, dev to prod | fly.toml per app |
| Templates & service catalog | 28+ templates, custom catalog | Quickstart launchers per framework |
| DORA metrics | Built-in (deploy freq, cycle time, MTTR) | Not available |
| Data seeding | Container, RDS, Cloud SQL, Neon, PlanetScale | No native seeding |
| Drift management | Auto-detect env divergence from template | No |
| Git ChatOps | /bns:deploy, /bns:stop from PR comments | No |
| Auto-sleep schedules | Project-level, custom per environment | Fly Machines auto-stop (per machine) |
| Multi-service environments | Full-stack envs with all services in one config | One app per machine — multi-service requires orchestration |
| Managed databases | BYOC — works with any cloud database | Managed Postgres, Upstash Redis, Tigris storage |
| GPU support | No | Yes — Fly GPUs available |
| Pricing model | Per-minute ($0.007/min), unlimited users | Usage-based compute, support from $29/mo |
| SOC 2 Type II | Yes | Yes |
| ISO 27001 + ISO 9001 | Yes | No |
| HIPAA | Contact sales | Yes — $99/mo add-on |
| BYOC (own cloud) | Yes — deploy to your AWS, GCP, Azure | No — Fly.io infrastructure only |
Bunnyshell AI Sandboxes
powered by hopx.
AI Sandboxes with Firecracker isolation and ~100ms cold starts. Execute untrusted code in JS, Python, .NET, Java, or Go. Full SDK with file operations, process control, port forwarding, and snapshots. MCP Server to manage environments from Claude Code, Cursor, or Windsurf. AI IDE Workspaces with persistent cloud VMs. Fly.io offers Sprites for isolated AI code execution — Bunnyshell adds MCP integration, AI IDE Workspaces, and full environment lifecycle management on top.
Bunnyshell manages
full-stack environments.
Preview environments per PR with auto-create/destroy. Production with autoscaling and zero-downtime deploys. Remote dev with IDE sync and debugging. Staging with drift management. QA with parallel testing. Demo environments for sales. Fly.io deploys individual apps globally — but does not manage multi-service environments, preview envs per PR, or remote dev environments.
Bunnyshell runs on
your own cloud (BYOC).
Deploy to your AWS, GCP, or Azure account. Keep data in your VPC, meet compliance requirements, and control costs. Bunnyshell orchestrates — your cloud runs the workloads. Fly.io runs everything on their proprietary metal infrastructure — no option to bring your own cloud or deploy to your existing Kubernetes clusters.
What else Bunnyshell
does that Fly.io doesn't.
Bunnyshell covers the full environment lifecycle. Here are capabilities Fly.io does not offer.
Preview Environments per PR
Automatically spin up a full-stack environment for every pull request. Auto-create on PR open, auto-destroy on merge. Fly.io has no native preview environment workflow.
Multi-Stack Support
Bunnyshell supports Docker Compose, Helm, Kubernetes manifests, and Terraform — mixed in a single environment. Fly.io uses Docker and fly.toml with their own Fly Kubernetes, but no Helm, Terraform, or Compose support.
Built-in DORA Metrics
Deployment frequency, cycle time, change failure rate, MTTR — tracked natively. Measure the impact of your environment strategy.
Database Seeding & Cloning
Populate environments with real data from RDS, Cloud SQL, Neon, PlanetScale, or container databases. Not mocks — production snapshots.
Drift Management
Detect when environments diverge from templates. Built-in diff editor to review changes. Keep staging in sync with production automatically.
Remote Development
Code in VS Code or JetBrains, run in the cloud. Real-time file sync, step-through debugging, port forwarding. No local dependency conflicts.
Trusted by engineering teams
shipping fast
“Manual tests on Argo CD PRs now take me seconds. When you review dozens of PRs a day, that's a game-changer.”
“Automatically created BunnyShell environment based on PRs, speeding up the entire task implementation process.”
“The automation and scalability that Bunnyshell provides complements the DigitalOcean platform, empowering developers to build amazing products.”
“Websites don't die anymore, sales keep growing sustained by state-of-the-art tech scalability. Customers send thank you cards.”
“From a release once in 2-4 weeks to multiple times per week, and nobody's stressed about it.”
“I can count on an integrated platform for managing our infrastructure — capabilities we don't have in-house, at a fraction of the cost.”
“I can do with Bunnyshell and a DevOps person what my clients are doing with 4 DevOps people.”
“Developers want convenience. They expect someone to translate their Docker Compose to the cloud. They're not going to rush to learn Kubernetes.”
“Bunnyshell was the only tool that handled our Helm + EKS setup without asking us to change everything.”
“60+ microservices. Bunnyshell deploys them in parallel and lets us control which ones come first.”
Frequently asked
questions
Can’t find what you’re looking for? Talk to our team
Bunnyshell is an Environments as a Service platform — it manages preview, production, staging, remote dev, and AI sandbox environments on your own cloud (BYOC). Fly.io is a global app hosting platform that runs hardware-virtualized containers on their own infrastructure. Bunnyshell focuses on environment lifecycle management; Fly.io focuses on running and scaling individual apps globally.
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